use 3 for 3 phase.
They are in a big pile. I am open to suggestions for using them for something
half-bridge then (aka totem pole)
is cherry good for smoking things?
(compress them into some kind of briquettes and sell 'em)
yes...other scraps are pieces resulting from making round things from rectangular planks
Sell them for humidor flavors.
I can assure you that I will be barbequeing with cherry for the rest of my life
cherry wood has cyanide like all fruit woods...
but I checked and it seems to be often used for smoking and cooking
suitable for 20A RMS at 240V (probably)
jmkasunich: IRF.COM part # 19MT050XF 500V 30A 1000W brick with bolts.
Looks like the same beast..
* Phydbleep does not read German.
it's in english too
Yeah, But I hate sub-titles. :)
this is what I've been using lately (4 in parallel) http://www.eupec.com/gb/2_PRODUCTS/2_1_ProductRange/pdf/DB_FS450R17KE3_2_3.PDF
Those are 300V 50A but look pretty close.
I am going to have a late dinner...
thanks john for your help
the IR 19MT050XF is a H bridge... VFDs use three phase bridges
les: you're welcome... sorry I can't help with pricing info
I thought I said to use 3 of them?
parallel the two sides of each one?
(you really need 1-1/2 of them
jmkasunich: I need some "engineering samples" of that last part.. Like a dozen or so. :)
the 450A one?
I could probably come up with one or two
* Phydbleep is a gret one for tying the sides in parallel and using the original rating. :)
they go for about $500 each
yeah, over building can be a good thing
Should handle 60A... Rate it for 30A. :)
gotta be carefull tho, sometimes strange things happen
the diode recovery in those 450A modules is worse (high dV/dT- 20KV/uS) when they are switching only a few amps - less than 10
Yeah, Equal length leads or figure in the propagation delay at really high freqs.
under the right conditions (diodes recovering after <1uS of on time) we've seen 50kV/uS
that stuff gets everywhere
* Phydbleep has had a couple of things go "WOOF!" because a wire was 2" shorter than it's mate.
except ours don't go WOOF, they go BOOM
Well.. The box went woof.. It was pretty well sealed to start with..
(DC bus is 10,800uF at 1000VDC, 5,400 Joules, all let out in a millisecond or less)
Nice.. I may want to talk to you later about firing a laser. :)
Or a rail-gun. :)
IGBT's don't work for rail guns... can't handle high enough current
I think those folks use either SCRs or triggered spark gaps
railguns need 10s to 100s of kiloamps
(we probably get that, but only when the drive blows up ;-)
gotta go... need to shutdown this computer so I can work on the ones that are under it in the stack ;-)
* Phydbleep has a nasty thought about crossing a drive rack with a rail gun.. Blow the drivers and it shoots the carcass into the scrap pile. :)
It's sure be satisfying some days. :)
Hurray... The wife is home and I can go out and pull weeds... yippie.. :\
hmm... an hour chatting with a girl that I like, seemd like 5 minutes.
rebates suck ass... it took 5 months to get to me.
Jymmm: Was it you that was building linear bearings?
* Jymmm nods
I have a thought.. 2 hexagonal pieces of plate with 3 sawn blocks between?
Phydbleep have you looked at the cost of hex bar?
Who needs a hex bar?
Phydbleep then I dont quite understadn what your describing
Use round bar. the 2 hexes of plate have a hole for the rod, the other 3 pieces are a 3 bearing mount, use bolts to clamp the whole thing together.
Similar to the cast ones with no casting.
how thick are these plates?
hmmmm about .250"
Phydbleep : Favor... can you do a Q&D sketch and post it some where?
Yeah, Hang on a few.
* Jymmm is Drain Bamaged today
Jymmm is now known as Red70sShow
Red70sShow is now known as Jymmm
Crap.. Now I'm brain damaged.. Or the program is.. trying to draw a hexagon ...
* Phydbleep gives up on eagle and tries open-fx.
or gimp =)
Wham,Bam Hexagon.. WTH was so hard about that?
Phydbleep how many fingers am I holding up?
Just the middle one.. :P
see, your seeing double when none are there!
Jymmm: You know what an F-117 looks like from the top? Sort of a cubist boomerang?
[02:55:24] <Jymmm> http://images.google.com/images?q=f-117&num=100&hl=en&lr=&safe=off&sa=N&tab=wi
Yeah, Park 3 nose to nose.. paint a hexagon around them, put the bearings between the wings.
your just trying to confuse me arent ya?
120 degree bearing spacing.
oh I see what your saying
No, i never learned how to draw in open-fx. :)
Waiting for the linux port.
Gimp is great for art and crap for drafting.
I think I'm still trying to figure out how to cut at 60 degree angles
No milling, all sawn.
Right, but CUTTING (swawing) at 60 degree angels
use the 2 hex plates to sandwich the 3 bearing carriers.. ues 3 big bolts to hold it together.
Lay it all out on a piece of 1.25" plate with a compass? Don't they teach the circle to hexagon trick anymore?
* Jymmm are kollaj edjumakated
Ah.. The radius of your circle is also the length of the flat side on a hexagon with it's points at the circle.
Ah, ok. cool
Put the point of the compass on the edge of the circle and draw an arc that crosses the edge twice.
Move the point to 1 of those points and repeat.
Yeah, i understand now. neat trick!
wans't aware the radius thingy
That's the 'old-school' trick for subdividing a circle. :)
I've been trying to find a book with math tricks like that for years!
Origami books. :)
the origami book I have is kinda an intro... and a lil waek
I used to be able to draw the isometric "cube with a corner missing" in about 3 minutes including shading.
I just tried the circle/hex thing... that's sweet
is that something you learned in gepmetry?
Yeah, It's usefull for a lot of things including seting up hexagonal tents properly. :)
Rope and pegs. :)
now if I had a REAL compas instead of this (literally) $0.99 plastic one
use a piece of steel strap or angle with 2 small holes in it.
Scribe in each hole and draw away. :)
Hehehe.. I've been working no-budget for 30 years. :)
See what I was saying about the 3 F-117 shaped pieces between the hex plates?
Phydbleep : Yeah, I'm just trying to figure out how to make it adj though
Put the bolts for the bearings through slots in the wings so you can set the tolerences.
I think I'll get this saw near the eond of the month : http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=37151
the problem is I have no way of cutting "slots"
I wish.. I'll end up with a 3 wheel bandsaw.. 3 - 10" wheels in a triangle with a blade around them..
What's wrong with a cammed bolt then?
Like for a quick change toolpost.
youre talking to someone who doens't even have a bandsaw (yet)
Oh, like an offset washer?
[03:26:25] <Phydbleep> http://homepage.ntlworld.com/v.ford/qctp.htm
It's a lathe item.
use a split bushing and then push the bearing onto that.
4'th pic down.
* Jymmm is feeling awefully ignorate ...
I see the pin
what's a split bushing, like a split washer?
can one buy a cam bolt like that?
see the ground down section of the pin?? Split a tube lengthwise and put the halves around the pin. Press the bearing onto the tube.
which will only fit in when it's 'centered'
No bigger than the ones you need are you could get them fabbed cheap or make them on a hobby lathe..
Rotate the bolt to set your tolerence. :)
or sloppiness =)
* Phydbleep like them tight..
Take that how you will. :)
lol, will do
I found a bench top dyna-mite, at work today with a "bad card"
Dyna-mite go boom?
andy_ --> http://photos1.blogger.com/img/29/1375/1024/Dyna-Mite.jpg
I dunno, that's what I was told
ah, noooo, we carry many more rounds in MI
andy_ you got the 100 round mag's too huh?
* Phydbleep carries attitude and figures that anyone who wants to get shot will bring their own gun.
* andy_ puts on tin fiol hat, reads ssl docs
* Jymmm wires andy_'s tin foil hat for 220VAC
no, no, nothin' here over 14 rounds
andy_: It's tin for apache or php.. For ssl it's lead foil.
pre-ban 17 round
is still elgal here
ah thanks Phydbleep
I think here too
Crossbow.. Silent and ammo that you can recycle with no reloading bench. :)
and what sucks.. is the post ban mags are marked big time!
but heck it's hard to beat 5 rnds 00, anyway
G11, Caseless. :)
anyway, is the 'lil dyna-mite a good candidate for emc experimentation?
andy_: What is it? mill/lathe/controller?
mill with controler
andy_ G11; as in one of these ---> http://remtek.com/arms/hk/mil/g11/g11.htm
Jymmm: Yeppers.. They make great kayak oars. :)
andy_: How big? I know you said benchtop..
hard to cary consealed
what do they mean "caseless" ?
I don't know, small, mabe 8x12ish, less the 1 hp
Yeah, I'd definately look better hung than John Holmes if I tried to hide my SB on me...
Jymmm: No shell casing, no primer. the propellant is molded on the back of the slug. :)
andy_: What do they want for it and how old is it?
aat least 15 yrs old, I'd liek to set it up for "show and tell" then mofe on to bigger things
Bad board + old age == $$$
I see, i need to read docs a bit I reckon
Hehehe... If you decide not to I might just to be able to mill pcboards. :)
I'm not sure what hardware i need, and the 'bad board" was hearsay from a coworker
P-II 300 or better with nothing else running..
Plus whatever for driver boards.
About $30 / channel for parts to do it yourself for stepper drives.
I see that's not out of the question, spare box or 2
About $10 per channel for 4096 ppr encoders if you make them yourself.
* Phydbleep is working on the design for those right now.
~$100 in parts for 5 channels of 100V 10A H-Bridge drive with the 4096 position encoders. :)
I'll investivate more
Symmetric pwm encoding on a 1.8" disk. :)
* andy_ 1/pi....
no I can onlt afford AMDs :)
2450 dpi for the encoders.
I'm working on a 1200 dpi radial printer for later ones.
so the controler boards have rs-232 interfaces then?
I^2C to a microcontroller to the lpt.
150 Hz polling for the encoders.
Plus a rotation counter for high velocity traverse.
Max spin rate for the pwm readout is 2000 degrees/sec.
andy_: What do they want for the machine? Or do you know?
I do not know
if you can run a soldering iron and want to play it's worth up to ~ $200 (if it's not beat to death and will do 0.001) Maybe $300 with the drive motors.
That is based on my opinion and not on any real value of the device.
I'd like to get paid to learn more about emc
that was gross, I'd like t odo some R&D at work
* Phydbleep is in New mexico near Sandia Labs and sees lots of "It was $50k in its day, do I hear $1?"
* Jymmm bids $0.25
I don't have room to store 99% of the machines that used to turn up at auction here.. There is a HUGE turret cnc machine rusting away at one of the local shops.
but ya can make a +/- .001 spheroid with a 300$ pos, hat is cool
andy_: If you use the right finishing technique yes. :)
< makes "no polish" copper electrodes
I mean I'd have to build a shop around the machine it's so huge.. looks like a 20"tool turret on it.. I could stand on the table and the tools are at shoulder height.
I think he's take $1000 for it just to get it gone.
that's too big for me
Me too.. I've got 8"x16" to work in and a 1937 SouthBend lathe that takes up 1/4 of that. :)
I have zero personal space, but my boss wil lpretty much let me do whatever I want
short of a blank check
That's all personal space.. Except for the dog that thinks it's a roller skate. :)
andy_: Ask him if you can mill out a mill ?
I'd rather sysadmin, my own controler :)
Well, If you mill a mill you'll need a controller for the new one. :)
and cover it with AMD/Slackware/emc stickers
Debian not slackware for the BDI's.
I can live with debian
And for gawds sake don't try to play mp3's on a running emc box
emc seems to do OK, but the mp3's sound like crap.
Morning fenn. :)
seems i have to wait another week before i can get my milling machine
I'll probably end up making a small gantry router for pc boards at least. I should be able to do all the pieces on the lathe with a milling attachment and a rotary index head.
why do you need a rotary index head?
Phydbleep come on... you can cut PCB's using a 1/2" end mill =)
little 120 degree bearing holders for the linear movement bearings, Same as Jymmm is looking at only smaller/lighter/more precise.
like on buildyouridea.com?
Yeah, sort of.
Jymmm: That's the site.. http://www.buildyouridea.com/
Phydbleep Yeah, I've seen it, but I aint goin THAT far atm =)
Yeah, but the hex/wedges idea from earlier could be stacked.to add bearings like that.
sounds like you need some castings
Nah, more like need to find a case of linear bearings that fell off the truck! =)
I dont really like the lo-res encoders he's got.. They're ok for a tachometer but not for positioning.
i had thought that the allen head bolts he uses as axles for the roller bearings were eccentric for fine adjustment of preload, but i guess he just uses set screws to push on the axle
fenn how so?
Check out http://184.108.40.206/enc2.ps
for a real encoder.
well start with an allen head shoulder bolt (a stripper bolt) mount in the 4 jaw off center and cut down to the bore of your bearing.
* Phydbleep has been learning to hack postscript.
now when you turn the axle the bearing moves around in a circle
use a split bushing around the cam bit.
probably easier to just make an eccentric bushing than to turn down a bolt
That way you can grind it in the middle of the bolt and still get the bearing on it.
ah good idea
i time out when trying to connect to your ip number
nah i figure i've seen what you made already anyway :P
it's a circle with radial stripes, right? or some variation on the theme
PWM encoded radial stripes... With printing in a semicircle.. :)
damn now where did it save that file
It'll display ok in gv on a linux box, I dunno about a windose box.
running fedora 3
hand ahcked .ps. :)
so you're planning on using this with steppers so you know if it's a wide stripe or a skinny stripe,r ight?
at 2450 dpi that should be good for 4096 ppr with a 128 pixel linear photodiode array.
oh getting fancy huh
Stepper or brush motor.. PWM drive. :)
why not just do absolute encoder if you have a 128 pixel array?
$100 in parts for 5 channels.
i mean print out the absolute encoder pattern
That is an absolute encoder. You mean Grey code or binary?
uh, i mean the first row is a semicircle, the second row is two quarters, third row four eighths, fourth row eight sixteenths etc until 1024 lines
10 bit.. this comes out 12 bit? Allthough...
Naw.. This is a lot simpler to print.
There will be a 50/50 pwm disk inside that for the tach and a sync marker befor that .ps is done..
you are using a microcontroller right?
1 in each encoder, 1 in each drive channel and 1 for a bus master.
7 for 3 channels.
* fenn scratches his head
<$2 each for the slaves and <$5 for the master.
my preferred setup uses 4-bit binary absolute encoders, and a comparator-based bus connected to the parallel port
it multiplexes through the devices attached to the bus, reads data and sends data for each device at the same time
Power can fail mid-cycle and as long as it didn't thrash the tooling it should know right where it is.
how far off can it get if power fails?
greater than one turn? >1/2 turn? etc
I'm on a 11x60 lathe.. Lots of rotating mass. :\
8-10 turns on a finish cut.
I try not to worry about such things until after they've happened :)
20 kilo 4 jaw chuck are like that. :)
oh this is a spindle encoder
And for for the leadscrew, etc..
same encoder for all of them.
200V 20A drive channel though.
the rest of the drivers are 100Volt 10Amp, the spindle drive will be 200Volt 20Amp. 1HP PMDC motor.
$120 (projected) in parts to set mine up. :)
what are you going to use this lathe for?
Everything but a sex toy?
well, if you throw enough money at it, it will be sexy enough in its own right
I need to be able to cut metric thread when i'm done.
i figure computer-controlled spindle speed is overkill for most anything but continuous production
That's why all the encoder accuracy and syncing.
does standard G-code even support spindle speed?
I also want to be able to chuck up a cam blank punch "GO", walk off and know the machine will shut down when it's done or if there is a problem.
i guess i am overestimating the cost of power transistors
$1/1, $55/100 for 100V 10A hexfets.
50 cents each for 6x 1 kilowatt?
that's in a 8-pin DIP?
i must have misunderstood "hexfet"
It's a combo device, Mosfet + diode + etc.
i'm gonna stick to buying electronics from surplus catalogs... less choices to make me confused
i go for whatever i can rip out of a dead whatever for parts suppliers. :)
that's a good way to start a collection but not so good for projects
it's OK to test/prototype with but hell to get matched set. :)
are the power ratings on to-220 components just a bunch of crap since it depends on the heatsink anyway?
Mainly.. You need to keep the devices <25C
i fixed a motor controller for a company by pointing out that the heat sink was too small and they should double the surface area.
why so low?
Keeps the devices from roasting themselves at startup/under load.
Spikes to 100C are ok, but need to drop the temp soon or "Poof!".
will a transistor heat itself up when in the "off" state?
I don't think so.. But I'm going to be running 50kHz pwm through this system.
fenn: One thing to know about me is I use the 5x rule for power circuits. Fat traces, oversize drivers, etc.
one thing to know about me is i've never gotten a circuit to work :)
I still use the proper fuses, but i have no worries about a pcboard smoking a trace.
how to calculate the width of a trace?
thickness x width.
treat it as a flat wire. :)
um i mean, I want to run 100 watts through this trace, with no green stuff on top, in a box with a fan
lots of variables i don't know
probably just make it as fat as will fit, huh?
1. mask the solder points with some blue-tac/fun-tack.. 2 brush on varnish to cover the copper.
fenn: Yeah, Within reason.. Tie any unused copper to ground for a ground plane.
Hmm.. Time to feed the dogs.. Which one looks hungrier, the cat or the turtle?
fenn: BTW, Fingernail polish make a good insulator if you use 3 or 4 coats.
thanks for the tip, i had been thinking only about laser transfer method for making prototype boards
Yeah, That's what the fun-tak and varnish is for... File/Peel off the lumps when the varnish is dry.
romaji ga warui ne
* anonimasu yawns
does anyone know of a good screencapture program that will dump printscreens to .jpg directly?
not for linux..
what happens when you press "print screen"?
it takes a printscreen.
the trouble is that I need to write a manual for the software I am developing..
and I dont feel like saving 50 images by hand
xpwd and batch it.
[06:30:23] <fenn> http://www.hernansoft.com/downloads_en.html#Captura
can't be that bad if they have a linux version right?
* Phydbleep just uses xpwd as it's almost built-in.
it probably works..
i had a program on my mac plus where you hit command shift 1 2 or 3 for full screen, part of a screen, part of screen to clipboard. dunno why that's so hard to implement
xpwd won't jpg directly but you should be able to pipe it to png2jpg.
what is this xpwd you speak of?
on a linux box 'man xpwd'
What? no xpwd on FC3?
$locate xpwd (nothing)
dont see anything on google either
* Phydbleep beats Redhat with a Mac.
Sorry, my mistake.. xwd.
Quick and dirty way to do it. :)
ooh cool there's also xwud that un-dumps the window :P
Yeah, It's usefull for images for software documentation as you can specify the window to dump from the command line.
hm captura wont do what I want :/
anonimasu: Win32 or linux?
Wow.. Gimp barfs hard on my hacked .ps :)
Cygwin, then run xwd?
too much work..
I might aswell hand save the images :/
Morning alex. :)
not much making a manual
I'm translating :(
hey Fido ;)
* Phydbleep is still hacking postscript.
alex_joni: maybe I should give you my EMC translation someday soon
tkemc I presume ;)
* alex_joni is working on mini...
but my emc-box here is so sloooow
I think I'll fiddle with PERIOD ;)
make it output pulses once / second ;)
that would leave time for GUI :D
nice smooth motion
ahh.. and use a pulse multiplier
I found some servos from a company we deal with
MAC's the name of the manufacturer..
do they have PC too?
[07:02:14] <anonimasu> http://www.sigbi.se/Downloads/Servo/mac_komplett%20datablad.pdf
although bloody expensive..
you can even position them with rs232..
I wouldnt mind having 2x of thoose on my mill..
why don't you ever see electric tool changers or pneumatic drive motors
they should just pick one power transfer medium and stick to it
What? And put all those engineers out of work?
arg. i'm obviously not getting anything done here. I'm going to dig for food in the trash now.
fenn: Broke or for fun?
i will post pictures i took of my fridge when i get my house back together
* Phydbleep is planning on getting a newer fridge and calling in an airstrike on this one.
* Phydbleep wonders if the contents of fenn's fridge developed sentience, nuclear power an meltdowns all in the course of a month.
I make sure mine stays at the 'hunter gatherer' level and no higher..
les: are you around?
03alex_joni * 10emc2/tcl/mini.tcl: added mini to EMC2. Fixed the bug toggleRelAbs not found on SF: 1184730
03alex_joni * 10emc/src/emctask/mini.tcl: fixed the bug 1184730 regarding toggleRelAbs, also toggleCmdAct (which was also missing)
03alex_joni * 10emc2/tcl/mini.tcl: added toggleCmdAct (which was also missing)
* Phydbleep goes cross-eyed trying to hack 5 degree stripes in ps and gives up for the night.
G'nite all. :)
Hehehe.. The last 200 or so lines in the history buffer is 'vi enc2.ps ; gv enc2.ps'
03alex_joni 07bdi-4 * 10emc2/src/emc/task/mini.tcl: fixed the bug 1184730 regarding toggleRelAbs, also toggleCmdAct (which was also missing)
alex_joni: Are you updating for the 2.6 kernel as well?
emc2 that is.
Phydbleep: I should, but I am not (not currently)
I still gotta get the time to set up a 2.6 machine (shame on me for not keeping up with the kernel development :D)
BDI-4 is currently 2.6.10 with RTAI-3.2
For shame.. 50 lashes with a hardcopy of 'man bash'
Phydbleep: Six weeks with emacs would be more appropriate
Then when you wake up, Get busy! :)
an0n: still around?
* alex_joni slaps anonimasu around with a wet towel (borrowed from paul_c)
* paul_c hands anonimasu a large wet kipper
you need to hand him some usage instructions too
hmmm.. if I only remember
right.. you submitted your email address to a sf-bug
that'll ensure you some constant mailflow
A new face...
Hi Paul, thought you had left already.
Seen Robin lately? We need to get the Preferences tab working when the wiki is used from wiki.linuxcnc.org because Alex has now mentioned that address in public.
He'll probably be around later this evening.
Yikes, it is worse than I thought. The wiki database at wiki.linuxcnc.org is a COPY of the original and is not being updated!
good day people.
micrometer = 0.001 mm?
what's a micrometer then? um
ask google 1 micrometer to mm
[15:39:58] <Jymmm> http://www.google.com/search?q=1+micrometer+to+mm&sa=Search+Google
A-L-P-H-A: One micrometre = 0.001mm
[15:40:57] <A-L-P-H-A> http://www.google.ca/search?hl=en&q=.001+inch+to+micrometer&spell=1
actually what I wanted.
A-L-P-H-A that's not what you asked for though! =)
cause this cold rolled steel is 12.4um/m/C from 20C to 100C range.
paul_c was that a typo or Brit spelling?
and I need to shrink 0.5005" to say 0.4995". So that's how many degrees do I need shrink the shaft.
or should I just press fit the damn things?
Not at all.
metre is the correct spelling.
paul_c like COLOR ?! =)
[15:44:28] <paul_c> http://en.wikipedia.org/wiki/Metre
it sucks that micrometer and Millimeter have the same abbr.
errr... S.I. units don't
m = milli or 10^-3
u = micro or 10^-6
paul_c a cse of dont believe everything you read.... �m
first three entries on google have micro as m instead of �
and I haven't finished my first cup of coffee yet =)
That's probably beause � isn't a standard ascii symbol.
yeah, I just use 'u' in it's place
you know the extended set... where they have funky a's and such... does that change the definition of the word if they aren't used?
Phydbleep You have any more of those math tricks?
i just found out why my stepper wouldn't move...
it was origionaly for a scanning lazer microscope.... and factory set to 20,000 step/rev
pemmet man, that's some stepper motor!!!
way more than i could handle
pemmet how big (ounces)?
it's acutally pretty small
um.. fits in the palm of my hand
dod od do.... so boring waiting for something to finish machining.
lathe is running away happily. I hope.
A-L-P-H-A well go design a casing for a rocket engine in the meantime
A-L-P-H-A or mill me a 100 round 9mm magazine =)
be sure to date it 1999 =)
actually... .22 LR would be better
Now there's an idea... see if I could convert this tube feed into mag fed somehow.
or at least increase the round capacity a bit
I hate reloading all the time =)
got a single stepper... tryin' to run it... freqmod or steppermod?
which would be better?
all it's doing is step direction... i wanna see it move...
with BDI-4.xx ?
the same one i had before
You have a choice of....
heh... makes it simple
i reset my period to .000020...
with the new stepper... only does 200 step/rev
anders: short question for you
what would you choose
a. 64kbit (99.5% uptime warranty) from GTS (former KPNQwest) on TDM
b. 64kbit (max. 512kbit) 99.0% uptime on fiberoptics
unless the operations is critical..
not that critical
b. is a smaller provider
fibreoptics tends to have lower latency
on sunday there is a Boing 767 waiting for me in Mailand :-)
but it depends largely on how good peering they have
only one seat :-(
but enough :-)
thought you rented the plane
they made no good offer
* anonimasu ywans
guys think I can pressure fit a bearing onto a shaft that's +0.005"?
Imperator_: What time do you land ?
shit. so sanding here I come.
A-L-P-H-A: 0.03mm maybe
but now way 0.127 ;)
paul_c: �hm, one moment
I'm not 100% shure (documents are at work) but i think its the one that arrives at 14:10 at Sunday
the flight is reserved vor me, i book it tomorrow
paul_c: do you know if somebody else of the fest participants is arriving at sunday ???
jmk is arriving Sunday, Ray is expected late evening
swp may well be flying in, and I think Jon Elson too.
what times, I do not know.
think 0.04-0.07mm would be okay to pressure fit a bearing?
it's kinda worm right now as well..
what OD ?
* Jymmm pokes A-L-P-H-A with a slide rule!
hm, 0.03 presses on..
anonimasu... good. cause it's now +0.005mm to around +0.02mm around the bearing seats.
you know... I've NEVER actually sen a slide rule.
I've seen, but never used a slide rule, but I'd like to learn sometime.
* Phydbleep comes wandering back from the land of sleep and parenthood..
Hehehe. Slide rules are fun.. There's a Picket 600-ES log/log (6") and a #4 deci/log/log vector hyperbolic model sitting on my desk right now. :)
Hehehe... And I've yet to have the batteries in either one go dead. :)
you mean there are different kinds of slide rules?
Oh yeah.. There's even ones that are rotating disks instead of the sliding bar.
but I'd consider that wiht of a different style than anything else
but I'd consider that more of a different style than anything else
I actuallly learned how to run a slipstick before caculators were everywhere ('76).. Their ok for quick math but not so great for ultra precision..
Hehehe... slipstick == sliderule. Got banned from bringing it to math class because because I was "making the other students feel inferior"..
not your problem
My response was "They can spend $5 like I did and RTFM"..
If you've got a good memory/spatial sense it gets to the point after a while where you don't even use the sliderule other than to check your estimate.. Hehehe... That's why my buddy in the math dept @ UNM is having me tutor him in how one works. :)
He calls his field of study "Quantum Theory", I call it "Procto-Theology".. :)
anybody know of a good X simulator for a slide rule?
I know there are some for other nice calculators like hp48
if you have an HP clac, why would you need a slide rule?
jepler: Let me look.
that's like putting an XT cpu into a P6
I mean LITERALLY
There's the types of slide rules.
jepler: XFRee86 3.x had a sliderule as part of xcalc.
what the hell... no add/subtraction! What do I have todo attach an abacus to this thing?!?!?!
Phydbleep: wild, I never knew that
jepler: You can add/sub on a slipstick.. RTFM! :)
Phydbleep: I mean, about xcalc
* Phydbleep looks.. There's a + & - key there.
Phydbleep on that urel it says "...They cannot add or subtract..."
Linear scale will do it not log scale.
Phydbleep: "I never knew xcalc had a sliderule mode"
I can't find the sliderule mode on the new xcalc.. Fedora Core 3
I was able to build it from ftp://ftp.freebsd.org/pub/FreeBSD/ports/local-distfiles/joerg/sliderule.tar.gz after changing the line 'extern int errno;' to '#include <errno.h>', then running 'xmkmf; make'
yeah, freshports is where I found it.
his README says the sliderule was from X11R3, which I'd have guessed was older than XFree86 3.x. Seems like they were at X11R4 or R5 when I first started using XFree86.
Phydbleep EHy, you have any more lil math tricks like the hex/circle one?
Time to go - See you all in another time zone.
Laters paul :)
paul_c safe trip!
paul_c be sure to say hello to jack for me
Jymmm: Probably.. But none that i really remember till I need them for something...
Jymmm: There's another one for generating a pentagon the same basic way.
Phydbleep I hear ya. I've justt been looking for a math tricks book for years with stuff like that in it.
very hard to come by
Jymmm: Seriously.. Origami / paper-folding books .
not just that stuff... but other math tricks as well.
like multiplying two 6 digit numbers together in your head and come very very close
or lil things like all number divisable by 9, add up to 9
Jymmm: That's hte mental sliderule trick.. takes a good memory and the ability to visualise the sliderule.
nah, this was taught a totally different way... very simplistic
too simplistic actually, and I forgot and he was a sub professor
for a day... I would have loved to pick his brain
* Phydbleep sweeps up dmess
Sorry, Autopilot.. Spring cleaning..:)
* Jymmm slaps Phydbleep with a slapstick!
anyone here used a network printe??
* Jymmm raises hand (M$)
* Jymmm setup quite a few too!
wifey purchased a 5 in 1 brother mfc544cn
dmess what os ?
dmess: You have my condolences?
xp pro doesnt seem to like the cd
dmess dl from their website
am doing the d/l now..
yeah, I dont care for Brother either
Download the newest driver.
canon/epson for inkjets
ive had good sucess usually with them..
dmess luck you
dmess: I hate multi function units.. Something always craps out and kills the whole thing.
Phydbleep newer ones are ok, just have to be careful
i have 3 cannons and an epson that wouldn't print for her.. so she got pissed and went shopping.
got an instore replacement warrenty for 35.00 bucks
I keep buying the new HP's because it's cheaper than buying cartridges for the old ones.
$35 for the warranty?! Hell I pick up printers for $40
a 2yr warranty on my gf's video card is only $25
but i figure mines gonna have issues ... sooner ... rather than later.. and its a discontinued model so i'll get the upgrade as a replacement
ah, ok cool
method to the maddness...
dmess: Hurray for 1kV across the usb bus?
* Jymmm pets his HP LJ 4p.... 10+ years and still goin =)
my new job is called a Methods Engineer... ; )
* Phydbleep has a HP 5P if anyone wants to pay shipping.
not usb.. its tcp/ip into the router
hell no... no display on that thing
You need a display to print?
i just destroyed an hp laser jet II clone by QUME
Yep... low paper, insert #10 envelope, New font face selected, etc
QMS... was a 200 pound beast but solid as a rock
and PS too
Sorry 5L not 5P
even worse... I have a 4L sitting in the shed
now if you had a LJ 4MP I'd take it off your hands =)
what are we supposed to do with all this shit...
dmess Can you say.... Plasma Cutter!
dmess Can you say.... Plasma Cutter Art!
* Phydbleep counts printers and sees a 5L, LJ IIIp, Officejet combo, 720c 890c.. And that's just the HP's..
landfills cant handle the electronic undertakers
just TIG a bunch a MoBo's together
what Phydbleep said
Hack & Slash on holidays... ; )
Souffle ? Those fluffy things you don't slam doors around when they're cooking. :)
or stomp on the floors..
i used to be fond of a good old fashioned bondfire
* Jymmm still is
Me too, but they want to call it arson if you do it at city hall..
but burnin' plastics and stuffes isnt so good for the environment...
dmess that depends on how fast and hot you can get the fire to =)
6000 degrees F in 3 seconds... no sticky plastic smell
we used to gather in the local sand pit and light up a few old truck tire.. stink AND smoke show..
The Simpsons and their Tire fire been goin for 20+ years
how do you get it to 6000F in 3 s.... solid rocket fuel??
dmess: You sure you're not in Albuquerque?
dmess sounds good to me... LOX works too =)
dmess: Add lots of liquid oxygen?
nope... in CANADA and proud of it
LOX isnt so easy to administer...
sure it is
That's right, You're close to A-L-P-H-A ..
oxy lances have a life expectancy of 1 trip
there's a man WITH a deathwish
dmess Here's the videos ---> http://www.doeblitz.net/ghg/
paramedics on scene??
Naw.. He just wants that hamburgerr"MOW!" :)
I need to finish machining this spindle... it's "almost done"... need to rough out the tail end.
no friggin doubt..
ALPHA... need a hand programming??
And it sves you from having to scrub all the crap from last season off the grill. :)
dmess, not really... I'm only doing the tail end... the head is already done... and machined nicely.
but the grill MUST be bolted down
dmess what grill?
* Phydbleep is going to build a "marshmallow roaster".
so what's the tail need??? spindle for what??
Phydbleep? a mechanical one? or just a squer?
dmess, just a spot for a bearing (3/8 bore), a pully, and a nylon lock nut... so I'm thinking 3/8-24tpi.
[21:11:31] <Phydbleep> http://www.backyardmetalcasting.com
I used to machine alot of aluminium (6061), and had bags of it... I just threw it out instead. As I never got around to building a smelter.
If the neibors ask it's a "marshmallow roaster". :)
3/8-24 ny-lock will be a std. aircraft component chk. GRASS ROOTS AVIATION 905-434-4651
dmess, I can pick it up for free at durham fasteners...
near the nuke plant.
3/8-16 ny-lock you can get from FAStENALL
Those nosy S.O.B.'s next door even. :)
that would be better.
dmess, they can get it to me without issue... I could get a 3/8-16... either would be fine.
GRA.. sells 1-5 pcs.. no min.. has a/c alum. tubbing and Cr-Mo tubbing too
* Phydbleep has 3/8-24 nuts and ponders stuffing some in an envelope with a note reading "Nuts to you! :)"
dmess, I get my stock from Ability Metals.
and fasterners from Home Depot, but usually from Durham Fasteners.
Gee.. Mine just came out of a 737.. :\
Durham Fasteners, the owner likes me...
good supplier..but limited on some alloys..
Ability Metals, show up with cash, and they usually give me a good deal... but they're switching over to this bastard system which keeps track of end stock.
dmess, they can order it in for me.
if I need something special.
yeah... but if the order it in you get NO break on it... and its getting $$$
dmess, got any 316 Stainless Steel rods kicking about?
dmess, yeah, that's why I go in the back door, and order at the back desk.
Talk to the mechanics at the small airfields, they usually have hardware they'll sell for race/specialty stuff...
I want 3/4" dia, grade 316 stainless to machine... cause it's supposed to behave like Titanium 6-4.
i like sat am purchasing... show up at the metal supermarket with coffee and dog-nuts.. we talk about what i need... they cant find it... i drive home and its in the back seat...
when i get home
I used to get buckets of used hardware and spherical rod ends because of a requirement that they be changed after X hours of flighttime.
how much Ti you need?
dmess, where is the metal supermarket in durham? I haven't been there yet.
I have 4ft of Ti grade 5 (6-4)
I don't need more yet...
I can get it for about $25/ft.
s/e of Thickson and 401
1610 McEwen Drive, Units1-3
oh i see.. i have about 6 ft of 1"dia Ti gr6..
addy sounds right...
[21:22:36] <A-L-P-H-A> http://maps.google.ca/maps?q=1610+McEwen+Drive,+oshawa,+ontario&hl=en
dmess, what are you doing with it?
how much did that cost?
oh hell, it's right beside Princess Auto
s on thickson...1st light go left..E....first street to your S.. and 1st driveway on the left.
kitty corner to PA
a BDI is also near that area.
hmm.. had that bar a while... was supposed to make model helicopter varios.. but it didnt pan out
BDI is in the front of the plaza/unit complex from m/s
I knwo where it is now.
i like machining Ti....
I haven't machined it yet.
I don't know how it'll perform.
ppl sayit sucks... i say it rocks...
aluminium is so easy to machine.
so is mild steel.
80 sfm in the anealed condition
ms is THE most miserable material to hold cert amd specs on.
and causes mechanical damage to machined surfaces so the wont pass non destructive testing
i prefer 4130/4140 at 42-45 Rc
I'm just making it for a high speed spindle
i have info in the data base for hsm... and its not ALL about RPM
it is when the end mill is 1/32"
code and machine response are major contributing factors
been there... done that...i had a sample with a 1" x 1" pocket with what looked like a bad surfacc finish on the botton
i had drilled 250 holes of .005" dia in the bottom
dmess: DIY tea strainer?
yup... but the s/f didnt look good on the bottom of the pocket...
Phydbleep I was playing with your circle thingy... never realized that a perfect triangle cut in half is 60 degrees.
circle thingy...?? compass
Yeah, if i remember right the pentagon is formed from the length of that line from the tip to the 90 deg corner.
dmess: Got Compass?
dmess: Compass as in circle drawing thingy.
are we bisectin' and trisectin'
Fornicatae Non Sapiens..
Phydbleep well, I'm not seeing the pentagon thingy
You draw the cirle, draw the hex to get the 120 deg triangle, split that to get a 30/60/90 triangle, The long side of the 90 is the length of the pentagon sides (I think, It's been years)
Go back to the top point on your hex and redraw for 5 sides. :)
I'll never remember that, but I'll try it
Play with it for an hour or so after you figure it out and you will remember it. :)
its got to do with 5 sides in 360 degees...72 deg.
shit.. i just had it and forgot it all in the same minute
72? 5? /me spent hours last night trying to get postscript to generate a 72 division 5 degree tach wheel... ARGH!
well, the the hex I got 40, but when I got to the end to figure out pent I got 60.
that short term memory los is synonomous with winblows
so it seems it's 1.5 *
hes... thats where the 20% came from..
im not drawing this im workin in me melon and had a stray .20
how you gettin the hex... im assuling compass and straight edge only right??
draw a circle.
then move the point ot the compas to the edge of the circle and draw an arc within the circle
next, move the copas to one of the points you just drew, and make another arc, etc
yes, smae radius
mapps the center..
That get's you 60 deg divisions.
dmess then you'll have a six pointed flower =)
yes i see.
then draw straight line from tip to tip
* Jymmm can now understand how the pyramids were built
got it... i wasnt allowing myself to see ti int of inner C and overall Circle
what was the question anyway??? ; )
dmess "What's the telephone number for 9-1-1?"
call 4-1-1 and ask//
Hello operator give me the number for 911!
i could connect oyu for .50$
but maybe you just need a friend.. l;)
ok connect me to Miss Cleo for $0.50
That # is busy, we can redial it for you till it connects for $.75...
miss C is on a slightly more elevated plan
bleep we should be her manager
* Phydbleep would rather manage rats..
They have better ethics.
Phydbleep theres a difference?
i like managing plants
they have the best ethics
Morals are what you think someone else should do.. Ethics are what you think you should do..
nice .. i never heard it put that way before
It's a game.
You win by walking away from a landing. If you can use the glider
again, all the better.
It's a zero-sum game -- every foot of lift is merely borrowed,
to be paid back in full by the end of the day.
The only thing you can accumulate is memories.
Do you want fond, fun memories or those of fear?
Judgement and History provide the right answer
same as life..
was the last entry in my to keep doc
Ah.. I was wondering if it was a paste or just lag.
what is gas worth stateside??
* Phydbleep is paying $2.25 avg
still cheaper than our .80-.90 a litre
What'sthe exchange rate now?
Phydbleep : I still can't figure out how to get 5 points out of that =(
a friend just got back from Fla. (exchange .78 to a dollar i believe) cost him 420 in fuel without the winch...
just called about getting an aero package for the mountain in a box
chk out www.highperspective.com
That has a couple of ways to do it.
* Jymmm still don't get it... eh will try some other time I guess
Maybe it was the short side of the 90.?
short side of the 90 to the biscected intof
should give the arc length... scribe and connect ...NO???
* Phydbleep goes out to the shop to get the compass..
works in my melon.. but its kinda an etch-a-sketch... so if i shake it the lines fade..
dmess Got Tequilia?
dmess... wont touch the stuff...
bad memories...a few scars...you know..
beer baby.. ; )
beer & budz
beer & babes!
married... 3 kids... kinda kuts down on the prowlin'
"Ya just gotta talk her into it.... make her think it's HER idea!" =)
babes come and go.. dudz are there for life
a friend will help you hide.... a buddy will help you hide a body...
OK.. I think I remember now.. circle, hex, draw a line through 2 opposite points, line at right angle to that thru 2 other points.
go with it..
you end up with an inverted t, 1/2 the dist from the tob to the crossbar is reall close.. Crappy compass here.
then from the cross of the T set rad to opposite corner of hex...
transfer to the horizontal line...
use THAT as C and scribe to circle..
I just drew the inverted t and used half the long bar length.
should fall above the hex's int by about 23 % chord length
ive hand drawn involute gear profiles and numerous wierd and wonderful developments
All I've gotten is a clock face
dmess bastard you cheated!
Gimme back my crayons!
dmess just messin =)
take your bat AND your ball and go play with yourself then... ; )===
* Phydbleep goes to pull weeds..
but dont break it...
I can pull them now or wait till the ground dries out then move everything and mow.. Less work to yank weeds. :)
old manual drafting days are still handy skills
They were teaching drafting in the 7'th? 8'th grade when I went to school.
i turned all the gardens last weekend...raining on it tonite... put in veggies this coming weekend
Now, they teach reading in the 12th grade
* Phydbleep has a junque gargen..
Phydbleep I keep telling you... get a goat!
i did a High School Special - Engineering drafting course in grade 11-12 worth 6 credits a yr.
i mentioned a goat to pfred too
I'll have to build a smelter.. Goats won't eat brass and crap parts. :)
maybe get a deal on 1 and share it...
you just need a small crucible forge... for that
do you own a Tiger torch??
have access to some fire brick???
Hmm.. that reminds me.. need to take a trip up on the mesa and grab a few buckets of empty .22's
can read instructions on bag of fire-mix mortar??
Kaocast KR3000 and perlite.
I want one for a 50# crucible.
find a natural gas fired water heater element... but your gonna have to re-jett it fot propane..
you have lifting capability i hope... hot lids and all
Blast burner.. and lots of steel for gantry crane. :)
Forced air/fuel system.. I'll use one for this , I know a potter that wants 6 more for kiln burners.
sounds like the ticket... my budz is a blacksmith... we do it all..
we've built a few for his students
gotta go for a reboot
that was a good nap