#linuxcnc | Logs for 2013-04-05

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[00:23:18] <jdh> http://wilmington.craigslist.org/tls/3719565720.html
[00:24:26] <jdh> I've got some small steppers and a spare tb6560, should be perfect for something.
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[00:27:53] <Tom_itx> JT-Shop good news
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[00:28:04] <JT-Shop> what's that?
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[00:28:54] <Tom_itx> you got the package
[00:29:13] <JT-Shop> lol did the peeoff tell you that?
[00:29:25] <Tom_itx> no, i'm catching up on the logs
[00:29:58] <JT-Shop> ok
[00:30:13] <Tom_itx> you need a pinout for the 7805?
[00:30:25] <Tom_itx> in gng out
[00:30:29] <Tom_itx> gnd
[00:30:35] <JT-Shop> your tutorial looked ok
[00:30:56] <r00t4rd3d> i would love that lathe jdh, did you buy it?
[00:31:00] <JT-Shop> time for chow and to turn on the magnetass switch
[00:31:06] <jdh> tried to, no response
[00:31:36] <r00t4rd3d> 12v too you could use the tb6560 to run the motor
[00:32:45] <JT-Shop> goodnight all
[00:32:50] <Tom_itx> later
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[01:27:56] <r00t4rd3d> jdh did you get a hold of that guy yet and buy me that lathe ?
[01:28:30] <jdh> emailed him twice
[01:28:46] <r00t4rd3d> prolly lots of people did
[01:28:53] <jdh> doubt it
[01:29:03] <r00t4rd3d> i would be on that
[01:29:07] <r00t4rd3d> 25 bucks?
[01:29:37] <jdh> they weren't that expensive new
[01:29:50] <jdh> yes send me your number and I will call
[01:30:36] <ProxDem> 25$ for a lathe?
[01:30:41] <jdh> 30 min drive from work
[01:30:42] <ProxDem> =P
[01:30:47] <jdh> toy lathe
[01:31:05] <r00t4rd3d> http://watertown.craigslist.org/for/3709477685.html
[01:31:13] <r00t4rd3d> thats what comes up on my list
[01:31:19] <r00t4rd3d> typical
[01:31:27] <jdh> heh
[01:31:36] <r00t4rd3d> a fucking doll house leg on it
[01:31:37] <jdh> this is a pretty isloated area.
[01:32:06] <jdh> relatively... ocean on one side, river on the other, swamps around there.
[01:32:26] <r00t4rd3d> its either garbage like that or stuff like this
[01:32:27] <r00t4rd3d> http://potsdam.craigslist.org/wan/3590903878.html
[01:32:32] <jdh> lots of transplanted new yorkers
[01:32:56] <jdh> that looks like some nice iron
[01:33:20] <r00t4rd3d> probably weights 8million pounds
[01:34:27] <Tom_itx> sell it for scrap then
[01:34:40] <jdh> there is an atlas and a south bend nearish here. too pricey though
[01:35:56] <jdh> http://tinyurl.com/cl64vxd I found those on craigslist. met the guy at a mcdonalds 100 miles from here while driving to florida
[01:42:03] <skunkworks> http://www.cnczone.com/forums/fadal/176690-if_you_were_replace_contro_retrofitl_what.html#post1256485
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[01:57:45] <skunkworks> I think we will be cnc'ing our 10EE
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[02:35:50] <tjtr33> skunkworks, did you notice the "using a program like Filtermax would help by converting all those small line segments to arcs." on that page?
[02:35:55] <tjtr33> theres been some interest here for similar ( but not likely OpenSource :( )
[02:36:15] <tjtr33> yeck, even uglier, no price listed and wants you to 'join' to find price nanananana
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[03:10:00] <skunkworks> we use bezarc at work..
[03:10:32] <skunkworks> for 2d stuff - I don't know if it will do 3d..
[03:11:02] <skunkworks> we use it to convert ai files to dxf using arcs instead of short lines
[03:16:02] <tjtr33> ah , kandu software and adobe illustrator. thx
[03:18:17] <tjtr33> i was getting too deep into Pythagorean-hodographs which is a way to get tangential arcs thru a set of points ( drowning! )
[03:20:06] <tjtr33> http://tinyurl.com/cgzhxxo
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[03:23:42] <tjtr33> http://www.ektf.hu/tanszek/matematika/workshop/zbynek.pdf
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[03:57:39] <pcw_home> Pretty cool
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[06:17:45] <Loetmichel> mornin'
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[06:44:04] <r00t4rd3d> night
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[07:16:18] <DJ9DJ> moin
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[07:20:29] <carper64> just deciding what to do today
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[09:56:53] <V0idExp> Hello everyone!
[09:58:08] <V0idExp> Is there a way to split core linuxcnc program from GUI, TK, and other graphical stuff? I'm implementing a customized linux distro, based on linuxcnc, which will act as an autonomous CNC device, which is commanded via TCP/IP
[09:58:59] <V0idExp> it would be nice to have a kind of linuxcnc-core, linuxcnc-axis, linuxcnc-utils or something like that...
[09:59:10] <V0idExp> say, it's like a feature request :)
[10:13:49] <archivist> it already splits at a messaging interface http://www.linuxcnc.org/docs/html/code/NML_Messages.html
[10:15:58] <archivist> you should also read the last few months on the developers mailing list for some other ideas being discussed recently
[10:25:32] <mhaberler> V0idExp: I suggest for now you use the NML messaging interface archivist referred to; also, look into the Python linuxcnc module and how you can set it up to work remotely with an emc.var file
[10:25:52] <mhaberler> I really suggest not to use linuxcncrsh or halrmt
[10:26:41] <mhaberler> you will likely run into problems with GUI's that access HAL, like GladeVCP - those cannot work remotely at this point in time; I am working on that.
[10:27:25] <V0idExp> Well... being less experienced, and needing a rapid solution, I've implemented a custom-protocol TCP/IP server, which is a Python socket-based packet listener, which based on commands arrived from socket, calls linuxcnc python functions... :D
[10:27:50] <mhaberler> excellent hack, likely more functional than linuxcncrsh
[10:28:34] <mhaberler> but actually the Python linuxcnc doesnt need that, it should be able to work remotely
[10:28:46] <V0idExp> well, yes, it allows custom behaviour, since commands are processed... also I implemented a custom python HAL component, which interacts with the server, allowing status reporting and polling from client
[10:28:46] <mhaberler> all it needs is the proper emc.var file I think
[10:29:09] <mhaberler> ah ok, sounds like a sensible workaroung for the current situation then
[10:29:18] <mhaberler> HAL would have been the next issue, yes
[10:30:07] <mhaberler> have you managed to tie that into PyVCP or gladevcp? this will be stock later this year, but not before summer
[10:35:45] <V0idExp> well, it's something like this:
[10:35:45] <V0idExp> 1) a python socket-based server, which listens on a given port for custom simple protocol packets, like {type='exec', data='g01 x100 y200'} or {type='home', data='x,y,z'}. In a multithreaded environment, it processes packets and eventually calls the linuxcnc.command or linuxcnc.state functions
[10:35:45] <V0idExp> 2) a python HAL real-time component, which does polling on CNC state, like limit switches, axis position and some pins and implements some "low-level" logic, like some movements based on machine's situation. the component communicates with the server via the same protocol (imagine a packet like {type='state', data='...lot of data...'}, through a UNIX domain socket.
[10:35:45] <V0idExp> 3) a client connects to the "remote cnc machine", and can be written in any language...
[10:35:45] <V0idExp> 4) the next step is to substitute the packet mechanism with some sort of RPC ;)
[10:35:45] <V0idExp> ... this is just for explaining the solution I've adopted... what I need is to reduce to bare minimal necessary the contents and dependencies of the linuxcnc package... since it will be contained on something like an read-only mounted flash card and will not even have a GUI. Imagine a black atom-based box, which just has 50-pin in/outs, a 12V DC jack and an ethernet port. That will eventually a commercial solution...
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[10:40:52] <V0idExp1> sorry guys, lost inet connection :(
[10:40:57] <V0idExp1> anyone has replied something?
[10:41:56] <archivist> no
[10:42:20] <ReadError> whats the web interface for linuxcnc?
[10:42:25] <ReadError> i remember seeing something about it
[10:42:29] <ReadError> to run headless
[10:43:13] <V0idExp1> yep, something like that, but instead of a web interface, it will be an RPC service, the interface is a custom closed-source application, which interfaces with machine's user
[10:43:42] <ReadError> #buzzkill
[10:43:45] <ReadError> closed source
[10:44:37] <V0idExp1> well, the "client" will be closed source, the RPC server itself, documented, will be released as LGPL, GPL, BSD or something like that ;)
[10:45:05] <V0idExp1> this is because the client application is based on machine vision computing, which is the cornerstone of our product
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[10:45:37] <V0idExp1> but the distro itself, server and everything else which is hosted on "cnc blackbox" will be released for free and will be open
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[10:47:52] <mhaberler> V0idExp1: you can always read back in the logs like so:
[10:48:04] <mhaberler> logger[mah]: zappadoing!
[10:48:04] <logger[mah]> mhaberler: Log stored at http://linuxcnc.mah.priv.at/irc/%23linuxcnc/2013-04-05.html
[10:48:38] <V0idExp1> ah, thx! :)
[10:49:37] <mhaberler> Dont expend a lot of effort in inventing your new remote procedure calls which are going to be not needed in a few months - this is needed only temporarily
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[11:21:02] <L84Supper> is the hobby and retrofit CNC controller market truly that lucrative?
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[11:36:27] <gabewillen> So i am assuming its strictly prohibited to call read() in a hal component on /dev/tty?
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[11:45:59] <jthornton> The phaonmneal pweor of the hmuan mnid, aoccdrnig to a rscheearch at Cmabrigde Uinervtisy, it dseno't mtaetr in what oerdr the ltteres in a word are, the olny iproamtnt tihng is that the frsit and last ltteer be in the rghit pclae. The rset can be a taotl mses and you can still raed it whotuit a pboerlm. This is bcuseae the huamn mnid deos not raed ervey lteter by istlef, but the word as a wlohe.
[11:50:38] <DJ9DJ> indeed
[11:51:11] <DJ9DJ> but the research is already some years old ;)
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[11:52:22] <jthornton> so am I
[11:52:28] <DJ9DJ> hrhr
[11:52:40] <DJ9DJ> mid-twenty? ;)
[11:53:19] <jthornton> you forgot the multiplier
[11:53:31] <DJ9DJ> :)
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[12:12:51] <r00t4rd3d> http://www.leevalley.com/us/wood/page.aspx?p=64300&cat=1,41182,48945
[12:14:56] <archivist> huge... look in the toolbox http://www.collection.archivist.info/archive/DJCPD/PD/2010/2010_07_27_tinware/IMG_0798.JPG
[12:16:13] <Tom_itx> they have numbers that big?
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[12:52:30] <pcw_home> gabewillen: You can use read() in a a user space HAL component
[13:07:41] <R2E4_awy> pcw, one step further. I got the vfd installed and running on my R2E4.
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[13:08:21] <R2E4_awy> te,mporarily. I am stuck on one of the transformers getting it converted to 220 from 460. There is no markings on it.
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[13:09:00] <pcw_home> Not in schematics?
[13:09:54] <R2E4_awy> http://www.youtube.com/watch?v=6q8811s56jw&feature=youtu.be
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[13:10:17] <R2E4_awy> IT doesn't show the 220 volt connections in the schematics. IT just shows the 460 volt conenctions.
[13:12:05] <pcw_home> Is it big? and what does it power?
[13:14:50] <R2E4_awy> http://www.irmtl.com/LinuxCNC/tranny/
[13:15:21] <R2E4_awy> The transfo on the left. It is 90VAC to power the Power Supply for the drives.
[13:17:53] <r00t4rd3d> 5 head
[13:17:55] <r00t4rd3d> http://www.insideindianabusiness.com/newsitem.asp?ID=58474
[13:18:06] <pcw_home> only 2 wires on primary?
[13:18:15] <R2E4_awy> yes
[13:19:21] <pcw_home> Yuck
[13:20:12] <R2E4_awy> Yuck on?
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[13:21:16] <pcw_home> I guess the options are find 220 --> 90V xfrmr or use a small 220-220 xfrmr as a booster
[13:21:49] <pcw_home> (or 220 --> 440 xfrmr)
[13:22:14] <R2E4_awy> why 220 -->440 xfo?
[13:22:43] <pcw_home> since thats a standard
[13:22:52] <tjtr33> is the small trafo powered from the big trafo?can you trace small primary to big 2ndry, maybe thru a contactor?
[13:23:29] <R2E4_awy> The small tranny is powered by 460 mains. I am trying to convert it to 220 mains
[13:23:55] <R2E4_awy> the big transfo is no problem as I have documentation on it.
[13:24:31] <tjtr33> then as pcw sez, use a buck-boost to get 2:1 or 1:2 as you need
[13:25:27] <R2E4_awy> I just found a chart in one of the BP manuals.
[13:26:08] <pcw_home> yeah so 220-220 isolation xfrmr in boost mode is probably the easiest
[13:26:10] <pcw_home> I notice thats a split bobbin xfrmr with electrostatic shield so it may be best to retain it
[13:27:03] <R2E4_awy> I found it. jumpers on H1-H4, H3-H6 then line H1 and H6 wooohooo!!
[13:27:07] <gabewillen> Is it possible to read serial data in a real time hal component?
[13:27:14] <pcw_home> Great
[13:27:47] <pcw_home> Sure but you have to do all the low level I/O
[13:27:56] <R2E4_awy> I'll disconnect the secondaries just to be safe....
[13:28:09] <gabewillen> oh so i actually have to flip the bits to read the data i cant use read?
[13:28:39] <pcw_home> no because it not a real time function
[13:29:33] <pcw_home> you can use read in a non-real time HAL comp
[13:29:57] <tjtr33> uses fp?
[13:30:29] <gabewillen> im trying to stream high speed serial data
[13:30:40] <gabewillen> andypugh was working on something similar
[13:30:54] <gabewillen> i guess i could pipe /dev/tty through halstreamer possibly
[13:31:10] <pcw_home> Yes possibly
[13:31:27] <pcw_home> or use userland comp
[13:31:35] <gabewillen> what about speeds though?
[13:31:48] <pcw_home> just depends on how critical the timing is
[13:31:53] <gabewillen> this is an encoder position
[13:32:12] <pcw_home> i dont think speeds are the issue, latency is
[13:32:55] <gabewillen> im sending a floating point position from an encoder at 921600 Baud rate
[13:33:09] <gabewillen> i have a c program that already reads it
[13:33:22] <gabewillen> trying to figure out how to get the data to hal
[13:33:42] <pcw_home> I would write a real time comp that reads the hardware
[13:34:05] <gabewillen> reads straight from the serial port?
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[13:34:16] <gabewillen> like the component serport
[13:35:13] <pcw_home> Yes, send request byte each thread and wait for data
[13:36:58] <pcw_home> probably best to use fixed point and sixels or some other framing scheme to keep data length to a minimum
[13:37:51] <pcw_home> and allow on the fly resync on errors
[13:38:12] <gabewillen> wow, this will take a bit of reading up on
[13:38:38] <gabewillen> i was so close to calling you yesterday and ordering a 5i20, had the number typed into my phone and everything. this is my last shot
[13:39:01] <pcw_home> there are some comps that do direct hardware I/O
[13:39:20] <pcw_home> as examples
[13:39:22] <ReadError> pcw_home is the 5i20 creator?
[13:39:37] <tjtr33> argh! serport.comp is in .../hal/drivers and not in .../hal/comp
[13:39:40] <gabewillen> i thought he worked at mesa could be mistaken
[13:39:47] <pcw_home> who wants to know?
[13:39:51] <gabewillen> or owned it lol
[13:39:56] <R2E4_awy> hehe
[13:40:29] <R2E4_awy> pcw is a 5i20, with an irc interface.
[13:40:57] <R2E4_awy> hehe, sorry couldnt resist
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[13:41:46] <pcw_home> :-)
[13:41:48] <pcw_home> unfortunately the serport comp sounds promising but just wiggles handshake bits
[13:41:50] <r00t4rd3d> there is gonna be a riot
[13:41:59] <r00t4rd3d> KFC is going totally boneless.
[13:42:09] <ReadError> lies
[13:42:13] <ReadError> its not april first
[13:42:13] <r00t4rd3d> i swear
[13:42:32] <ReadError> why would they do that
[13:42:35] <ReadError> its more expensive
[13:42:41] <r00t4rd3d> http://www.usatoday.com/story/money/business/2013/04/05/kfc-kentucky-fried-chicken-boneless-fast-food-chicken/2011419/
[13:43:11] <pcw_home> Chickenoid
[13:43:22] <r00t4rd3d> la will probably be on fire soon
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[13:46:39] <tjtr33> yes serport.comp aint for communications, just digital io, clever name got me
[13:47:10] <gabewillen> i know
[13:47:16] <gabewillen> im going to try streamer
[13:47:30] <gabewillen> just have to figure out how to get the data sent to it correctly
[13:48:48] <pcw_home> if its a continuous stream, you need some kind of framing
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[13:50:43] <gabewillen> framing?
[13:50:48] <gabewillen> sorry for my ignorance
[13:51:24] <pcw_home> if you just have a bunch of chars in a FIFO what starts the message?
[13:54:23] <gabewillen> i don't follow... the message streams continuosly
[13:54:29] <pcw_home> a simple low level way would be say 3 byte data message with 7 bits of data per byte, MSB set on first byte for framing
[13:54:31] <pcw_home> (so 3 chars gives you 21 bits of encoder data and about 33 usec per message at 921k)
[13:55:16] <gabewillen> write now im sending the data from the arm processor to the pc using printf("%d", pulses);
[13:56:09] <gabewillen> i figured it would be easier to send an integer value, than a float
[13:56:46] <pcw_home> so its being sent in ASCII
[13:58:15] <pcw_home> that will slow it down but maybe thats OK
[13:58:17] <pcw_home> but even sent in ASCII, it needs a newline or special char for framing
[14:00:03] <gabewillen> oh i see
[14:00:27] <gabewillen> i was using screen to debug the data at first. "%
[14:00:33] <gabewillen> "%d\r\n"
[14:00:57] <tjtr33> you could start reading data in middle of the number unless you use the framing
[14:01:09] <gabewillen> i gotcha
[14:01:10] <pcw_home> yes
[14:01:21] <gabewillen> similar to sending gcode to a cnc via serial
[14:01:26] <gabewillen> the start and end character of each line
[14:01:32] <pcw_home> Yes
[14:01:34] <gabewillen> makes sense now
[14:01:45] <gabewillen> sorry its been a long couple of days, working on this
[14:02:27] <gabewillen> hmmm what would you suggest be the start character?
[14:02:49] <gabewillen> white space?
[14:03:06] <pcw_home> if its all real time, you can use a master slave system where linuxCNC sends a request byte and the serial encode device answers
[14:03:39] <gabewillen> thats what i was looking for, i was going to try to do it over ethernet, but serial should be plenty fast enought
[14:03:42] <gabewillen> enough*
[14:03:46] <pcw_home> probably just LF if its ascii on unix
[14:04:14] <gabewillen> 90 rpms, with a 7200cpr encoder
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[14:04:21] <gabewillen> is what im shooting for
[14:06:16] <tjtr33> thats 11mS between each read, whats your thread speed?
[14:06:37] <gabewillen> 23000ns
[14:06:43] <tjtr33> woops i ignored the cpr
[14:07:02] <pcw_home> if you can do 921K I think its possible to read one or maybe a couple encoders in real time
[14:07:04] <pcw_home> if the protocol is reduced to simple binary 1 byte request --> 5 or 6 char response
[14:07:52] <gabewillen> how soon could i get the 5i20 combo? its kinda over kill seeing this is an indexing hob sharpener with one axis, and one encoder but it could be extremely simpler
[14:08:00] <pcw_home> if you use halstreamer, you will get glitches occasionally
[14:08:15] <pcw_home> I would use a 5I25
[14:08:40] <gabewillen> thats what i meant
[14:08:44] <pcw_home> (cheaper)
[14:09:23] <gabewillen> yes the cheapest kit... worth it? or should i continue down this path? i already have the arm processor
[14:09:45] <skunkworks> heh - when do you want it to work? ;)
[14:10:45] <pcw_home> I guess it depends on whether you are being paid by the hour
[14:11:01] <gabewillen> on salary
[14:11:06] <gabewillen> lol
[14:12:18] <gabewillen> i already had this working but we need more accuracy hence the 7200 cpr encoder, i had a 2500cpr on there before, but seeing that 28,800 divides evenly into 360 degree's i should be able to eliminate accumulative error
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[14:13:59] <tjtr33> pcw_home, "if you can do 921K"... is that about thread speed? serial rate?
[14:14:18] <pcw_home> serial baud rate
[14:15:42] <pcw_home> 921K is like 11 usec/char
[14:17:09] <gabewillen> i figured this would work... but might take some doing
[14:17:43] <gabewillen> could i pipe my c program to streamer?
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[14:18:27] <IchGuckLive> hi all B)
[14:18:39] <gabewillen> i tried just editing streamer_usr.c adding the "termios.h" and port settings into the source file
[14:19:07] <gabewillen> its using strtoul to convert to hal_u32
[14:19:37] <gabewillen> the count will never exceed 28,800 as it resets to zero every revolution
[14:20:13] <IchGuckLive> gabewillen: retrofitting a mill
[14:20:36] <gabewillen> nope, just tweaking a hob sharpener i converted a while back
[14:20:59] <pcw_home> probably possible but bear in mind that its not real time so will have occasional timing glitches and since its streamed
[14:21:01] <pcw_home> (not request/reply) the host may not be able to support that fast a data rate continuously
[14:21:08] <IchGuckLive> and the problem is following error on encoder
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[14:21:52] <gabewillen> i could drive the entire machine from arm, and communicate over the parallel port
[14:22:25] <IchGuckLive> why not full RT parport
[14:22:57] <tjtr33> 11uSec/char and connected to a hal comp in a thread? and 23uS thread period? i dont see it possible.
[14:23:27] <gabewillen> okay i like that answer
[14:23:44] <gabewillen> it doesn't have to do 90 rpms
[14:24:04] <gabewillen> anything over 50 should suffice
[14:24:31] <gabewillen> its only indexing the gash amount divided into 360
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[14:24:46] <tjtr33> pcw_home, is smartserial useful for this problem ( high speed serial data aquisition ) ?
[14:24:47] <gabewillen> so for a 15 gash hob, 24 degrees, and it has about 2 seconds to do that
[14:25:50] <gabewillen> using just lcnc right now i can get about 30rpms
[14:26:23] <gabewillen> repeats with in .0001 after all 15 gashes, thats just through the parallel port
[14:27:23] <tjtr33> using parport, hal, and this serial encoder info?
[14:27:27] <gabewillen> no
[14:27:50] <gabewillen> using hal with the encoder a and b attached to parallel port in pins
[14:28:28] <gabewillen> pid, with max following error of .0125 equal to on line on the encoder
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[14:31:35] <tjtr33> ok and it seems that the change to get higher precision and speed shouldnt be a quantum leap
[14:31:51] <tjtr33> the changes being, using the serial data of the encoder
[14:33:01] <tjtr33> and getting > 30 , <= 90 rps
[14:33:15] <tjtr33> > 50
[14:33:34] <chopper79> Hello, I need some pointers on where to start at on making changes to kin modules. I need to modify gantrykins a bit.
[14:36:30] <tjtr33> oh it IS rpm i didnt get rpms sussed till i re-read the gash stuff ( not a gear maker, a mold maker :)
[14:43:27] <tjtr33> if the parport strategy is maxed out, then IchGuckLive's idea about a non motherboard parport sounds like a way to increase throughput (mesa SuperPort or just gpio pins )
[14:44:11] <tjtr33> theres no gain in angular precision yet, but see if those solutions give the desired result for the rpm issue, then work on the serial issue
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[14:44:20] <tjtr33> i also have a serial encoder to deal with
[14:44:35] <IchGuckLive> 2 parports or even 3 is good to go
[14:46:20] <r00t4rd3d> drill press lathe chuck that will hold 1.5 - 1.0 - .75 square stock: http://i.imgur.com/qsvkQi3.jpg
[14:47:30] <jdh> drill press lathe chuck?
[14:47:49] <tjtr33> how much faster is a Superport than a motherboard/pci parport? 5:3 ? thats what he needs at minumum
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[14:49:02] <pcw_home> on the 5I25 max encoder count rate is 8MHz so maybe200X
[14:50:04] <tjtr33> :)
[14:51:04] <r00t4rd3d> jdh, redneck.
[14:51:20] <pcw_home> same with the stepgen
[14:51:25] <jdh> yes, I am, but I still don't understand.
[14:51:42] <r00t4rd3d> i got the idea from this
[14:51:42] <r00t4rd3d> http://farm3.staticflickr.com/2752/4149578376_141a0ffb41.jpg
[14:52:03] <jdh> ahh... gotcha
[14:52:29] <jdh> really bad 4 jaw chuck
[14:53:03] <jdh> wear safety glasses.
[14:53:11] <r00t4rd3d> lol
[14:53:21] <r00t4rd3d> ive used my drill press as a lathe before
[14:53:37] <r00t4rd3d> center a screw and cut the head off
[14:54:25] <cpresser> r00t4rd3d: i see you are using vcarve. did you figure how to create hires previews?
[14:54:26] <tjtr33> pcw_home, thx, i think gabe can use the AB signals (he did already) and not use the serial ( no idea what hdwr has both), and at least go faster with same precision
[14:55:14] <r00t4rd3d> cpresser, thats aspire but I think its in the menu options
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[15:01:21] <r00t4rd3d> why do you know how to set it higher or you want it as high as mine?
[15:01:37] <cpresser> i want it higher as yours :)
[15:02:38] <r00t4rd3d> i think its just Toolpaths, Preview Simulation Quality, Highest
[15:03:12] <cpresser> mine is set to best (other are default & high)
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[15:05:11] <cpresser> i was just hopeing you might have a clue how to turn it even higher
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[15:06:21] <r00t4rd3d> no but if you use solid colors it seems to look better then wood grain
[15:08:33] <IchGuckLive> jdh: there are so cheep chucks and you might found a solution to get them on the drillpress
[15:08:47] <IchGuckLive> no need for hazardass mounting
[15:09:06] <jdh> Ich: not mine, I value my limbs more that that.
[15:09:17] <r00t4rd3d> psy
[15:09:24] <IchGuckLive> O.O
[15:09:31] <jdh> I have an R8 4" chuck. Was under $100
[15:09:37] <jdh> and two lathes
[15:09:43] <IchGuckLive> gree
[15:09:46] <IchGuckLive> a
[15:09:48] <jdh> hopefully 3 in a few hours
[15:09:51] <cpresser> r00t4rd3d: http://imagebin.org/252898
[15:10:01] <r00t4rd3d> jdh did they email back?
[15:10:02] <cpresser> thats how mine look if you zoom in a little
[15:10:25] <jdh> r00t: yeah, he just asked for phone number and said he would call.
[15:10:34] <r00t4rd3d> vcarve pro 6.0?
[15:10:44] <cpresser> 7.0
[15:10:50] <cpresser> its out just a few days
[15:10:58] <cpresser> i used 5.0 prior to that
[15:11:57] <r00t4rd3d> wow there is an update :/
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[15:16:02] <IchGuckLive> r00t4rd3d: did you try sheetcam on this part stuff it is only 2 klicks for tha hole sheet to get g-code on plasma or mil
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[15:28:28] <IchGuckLive> by
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[15:28:47] <gabewillen> what is full rt parport
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[15:32:44] <r00t4rd3d> my guess is real time
[15:32:59] <r00t4rd3d> parport is parallel port
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[15:44:16] <jdh> 10% off everything and free ground shipping sitewide at Enco
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[15:46:59] <r00t4rd3d> Im gonna make a pipe
[15:47:33] <jdh> out of wood?
[15:47:46] <r00t4rd3d> yra
[15:48:23] <jdh> how about a brass pipe nipple, 90-elbow and a 1/8-1/4 reducer
[15:48:59] <r00t4rd3d> probably shooting more towards the corn cob style
[15:49:32] <jdh> really.
[15:49:34] <r00t4rd3d> i need to cut my chuch first though
[15:49:39] <r00t4rd3d> chuck
[15:50:53] <jdh> 3/8" end mills are $3, 1/4" ones are $7 that's annoying
[15:51:25] <r00t4rd3d> supply and demand
[15:51:36] <r00t4rd3d> no one wants the 3/8
[15:52:32] <jdh> I have lots of 3/8" ones. They generate a lot more chips than 1/4"
[15:53:23] <R2E4_awy> Where are you getting endmills for 3.00 and 7.00?
[15:54:11] <jdh> HSS from enco http://www.use-enco.com/CGI/INPAGE?PMPAGE=/specials/320-0060
[15:54:49] <r00t4rd3d> http://www.ebay.com/itm/Carbide-Router-Bit-3-20mm-125-1-8-Shanks-NEW-Solid-Carbide-CNC-PCB-/160816395593?pt=LH_DefaultDomain_0&hash=item2571677549
[15:54:54] <r00t4rd3d> those are the bits to hae
[15:54:57] <r00t4rd3d> have*
[15:55:25] <jdh> snap too easy
[15:55:33] <r00t4rd3d> ive never broke one
[15:56:06] <jdh> cut faster/deeper/harder
[15:56:52] <R2E4_awy> he says no cause they will break....hehe
[15:57:33] <r00t4rd3d> lead nut would probably snap first
[16:00:46] <Loetmichel> r00t4rd3d: those are only good for fiber plastics
[16:01:00] <Loetmichel> (FR4, carbon and so on)
[16:01:32] <Loetmichel> For wood and aluminium there is to less swarf room in them
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[16:07:43] <ReadError> r00t4rd3d,
[16:07:45] <ReadError> i use those
[16:07:53] <ReadError> cept i pay like 18$ for 10
[16:08:04] <R2E4_awy> where?
[16:08:55] <ReadError> ebay
[16:08:59] <ReadError> drillman1
[16:09:06] <ReadError> hes got a bunch of good stuff
[16:09:14] <ReadError> those diamond ones hold up very well
[16:09:23] <ReadError> except these 1/16"
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[16:16:05] <jdh> I want them for 6061
[16:29:25] <r00t4rd3d> all i cut is hardwood with them
[16:29:41] <r00t4rd3d> Loetmichel
[16:30:55] <r00t4rd3d> i have 2 and probably cut 8 miles of oak with them
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[16:36:35] <r00t4rd3d> weed and boredom = http://i.imgur.com/ggDu9Pv.jpg
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[17:00:52] <c60> I buy lots of stuff from http://888sharpco.com/store/ it's a little more expensive, but it's all dimar.
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[17:38:26] <Loetmichel> r00t4rd3d oak is a very hard ad short fibered wood
[17:39:17] <Loetmichel> try pine plywood and it will burn its way trhough in no time
[17:39:23] <Loetmichel> because it will clog
[17:40:52] <Loetmichel> for wood and soft metals i use these a lot of the time: http://www.sorotec.de/shop/product_info.php/info/p475_vhm-fraeser-zweischneider--flach---3-0mm.html
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[18:24:03] <Tugge> Good evening. I have a problem with my milling machine. I've been trying to engrave text to aluminum, but the result is not good. Here is the picture of testing different RPMs and feed speed: https://skydrive.live.com/?cid=4d02066e8d01f203&id=4D02066E8D01F203%211177&sff=1&authkey=!AFEDXaosw2rYxzA
[18:24:40] <Tugge> I used some sinol to lubricate aluminum but it didn't help.
[18:25:35] <cradek> what's your max rpm? is that anodized?
[18:27:19] <cradek> guessing that's a 1/4 tool and you're using just the very tip - you probably want 10,000 rpm
[18:27:47] <Tugge> RPM was between 10k and 32k and aluminum was anodized.
[18:27:51] <cradek> if you can't do that, consider a drag engraver
[18:28:18] <cradek> what kind of aluminum is it?
[18:28:26] <cradek> looks gummy
[18:30:13] <Loetmichel> if its anodized an a hss engraving bit: forget it, us a tungsten carbide one
[18:30:18] <Loetmichel> use
[18:30:19] <Tugge> The material is from this enclosure: http://www.hammondmfg.com/1455.htm
[18:30:47] <cradek> I agree with Loetmichel
[18:31:39] <cradek> that cast aluminum is probably very gummy material for milling
[18:31:40] <Loetmichel> the anodizing is tha same stuff as the grit on "korund" grinding paper
[18:31:42] <Tugge> So you think that the problem is with the milling bit?
[18:31:50] <Loetmichel> ... a hss toll is dull in NO time there
[18:31:56] <Loetmichel> yes
[18:32:13] <Loetmichel> use a tungsten carbide engraving bit
[18:32:16] <cradek> you could try carbide with it under oil or water
[18:32:18] <Tugge> Ok. So I need to order better bits.
[18:32:30] <cradek> but the material is still probably a poor match for milling
[18:32:34] <Loetmichel> water with a drop of detergent
[18:32:40] <Loetmichel> or even better: lamp oil
[18:32:58] <cradek> consider adding a plate of appropriate material for your panel instead of engraving the boxes directly
[18:33:16] <Tugge> I believe that lamp oil equals sinol??
[18:33:27] <Loetmichel> cradek: with the right toool the anodized aluminium is engraveable like a charm
[18:34:24] <Loetmichel> i dont know what sinol is
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[18:34:50] <Loetmichel> cradek: http://www.cyrom.org/palbum/main.php?g2_itemId=9211
[18:35:38] <Loetmichel> http://www.cyrom.org/hajo/namelampe.avi
[18:36:02] <Loetmichel> Tugge: the video: tahts a carbide bit
[18:36:23] <Loetmichel> ans tha spray is some WD40-copy
[18:37:36] <DJ9DJ> i see no one with my name :(
[18:37:47] <Tugge> Loetmichel: What is your RPM?
[18:37:51] <Loetmichel> 5000
[18:37:57] <Tugge> and feedrate?
[18:38:08] <Loetmichel> DJ9DJ: thats because you dont work for my company
[18:38:32] <Loetmichel> that was a christmas gift from me to my underlings ;-)
[18:38:32] <DJ9DJ> ah, i see
[18:38:50] <Tugge> Could one of the problems to be that my RPM is too high?
[18:39:13] <Loetmichel> it could but is not probable
[18:39:28] <Loetmichel> i had only the 5krpm spindle at that time
[18:39:43] <Loetmichel> it would've been better to use 20k
[18:39:53] <DJ9DJ> but... Loetmichel, you could have made one for me instead one for yourself ;)
[18:40:01] <Loetmichel> the only problem is your tool
[18:40:16] <Loetmichel> this soft aluminium needs a VERY sharp tool
[18:40:33] <Tugge> Okay. I will buy those tungsten carbide v-bits from ebay and try again.
[18:40:37] <DJ9DJ> bubblegum aluminium? ;)
[18:40:48] <Loetmichel> and a hss-tool is dull in anodized aluminium almost at the second you cut the first letter
[18:42:29] <Tugge> Loetmichel: Can you suggest any good brand or models?
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[18:43:33] <Loetmichel> no, because i am german
[18:44:02] <Loetmichel> and the shop i buy from would be a bit expensive for you i suppose
[18:44:39] <Loetmichel> i use these a lot: http://www.sorotec.de/shop/product_info.php/info/p179_vhm-fraesstichel-30-.html
[18:45:08] <Tugge> Heh. I was just on that same page checking bits :)
[18:45:48] <DJ9DJ> moi! :)
[18:46:07] <Loetmichel> You have to have a diamond file, thoug
[18:46:12] <Loetmichel> though
[18:46:24] <Loetmichel> the bits come wit a 0,00mm tip
[18:46:40] <Loetmichel> which will break at first contact with the workpiece
[18:47:24] <Loetmichel> you have to file a "flat" on the tip so wide that it cuts a "bottom" in the vgroove to your desired width
[18:47:28] <Tugge> Well that sounds quite expensive.
[18:47:30] <Loetmichel> les see
[18:47:57] <Loetmichel> no, mine came with the leaterman wave, but singe diamond files come at about 5 eur
[18:48:01] <Loetmichel> single
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[18:48:25] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=8961
[18:48:40] <Loetmichel> there i am cutting the "flat head" on a selfground engraving bit
[18:49:03] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=8958 <- selfground bits made from broken milling bits (TC)
[18:50:03] <Loetmichel> http://www.youtube.com/watch?v=4iaFb6WInuw <- grinding engraving bits...
[18:50:05] <Tecan> (4iaFb6WInuw) "Stichelschleifen" by "Loetmichel" is "People" - Length: 0:04:36
[18:51:34] <Tugge> So that is how you can sharpen those bits.
[18:52:16] <Loetmichel> i dont recommend trying this without a reference
[18:52:27] <Loetmichel> i.e a sharp bit that is working
[18:52:54] <Loetmichel> i needed to grind about 20 or 30 bits to get the first one working
[18:52:57] <Tugge> That true. But ofcourse, if you know that your bit is dull, you don't lose anything :)
[18:52:57] <Loetmichel> ;-)
[18:53:11] <Tugge> What was that blue stuff?
[18:53:22] <Loetmichel> those bits werent dull, they were broken
[18:53:29] <Loetmichel> window cleaner
[18:53:33] <tjtr33> "<gabewillen> what is full rt parport" i think IchGuchLive meant a parport equivalent, like the mesa 5i25/6i25,
[18:53:34] <tjtr33> look at mesa's site. pcw_suggested it could perform much faster than a motherboard parport.
[18:53:52] <Loetmichel> to cool the bit a bit, my fingers tend to smope if the bit get hotter than a few 100 deg. C
[18:53:55] <Loetmichel> ;-)
[18:54:07] <Tugge> Okay. I beleive I have that somewhere (need to ask from my wife...)
[18:54:34] <Loetmichel> it was just standing around, i could have used normal water
[18:54:35] <Loetmichel> ;-)
[18:55:13] <Tugge> So it's just for cooling the bit down?
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[19:00:15] <Loetmichel> yes, the diamond disc heats the bit um beond my capability to hold it ;-)
[19:00:20] <Loetmichel> beyond
[19:00:27] <Loetmichel> up
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[19:24:05] <Loetmichel> Tugge: but i warn you: it is frustrating to do engraving bits "free hand"
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[19:24:38] <Loetmichel> i needed 20-30 tries until the first one had cut right.
[19:25:01] <Loetmichel> and i have plenty of experience with free hand grinding of driss and so on ;-)
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[19:28:19] <Tugge> I believe you. But without doing you wont learn, so there is no easy way to be a master :)
[19:28:46] <Tugge> What can you say about these kind of bits? http://www.ebay.com/itm/SET-10-MICRO-ENGRAVING-TOOLS-30-through-120-degrees-Kyocera-Tycom-/380581380499?pt=LH_DefaultDomain_0&hash=item589c6b0193
[19:29:20] <Tugge> These looks a little bit more professional than those Chinese bits.
[19:30:41] <Loetmichel> looks ok to me
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[19:32:39] <Loetmichel> s/driss/drills
[19:33:21] <Tugge> Do you prefer more bits with fluids or those V-shape bits? What is the difference between those two?
[19:33:33] <Loetmichel> fluids?
[19:33:44] <Loetmichel> you meant Flutes?
[19:34:02] <Tugge> Those cutting edges of milling bit.
[19:34:18] <Tugge> Or flutes..
[19:34:22] <Tugge> Sorry..
[19:35:13] <Loetmichel> the halved v-shape are good for hard materials like PCB engraving . less good for plastics and easily smearing materials
[19:35:59] <Loetmichel> there are the 1 flute or 2 flute types wit a spiral flute better because the cutting edge angles are better for soft materials there
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[19:37:30] <Tugge> So for PCB i should use halved v-shape bit and for aluminum spiral flute type bit.
[19:37:31] <Loetmichel> and tha aluminium used for "extruding" and anodizing are the type we call "Kaugummi-alu" in german ("bubblegum aluminium") because its tends to melt and smear on teh mill bit
[19:37:38] <Loetmichel> right
[19:39:48] <Loetmichel> and WD40 or cheaper simple lamp oil ("petroleum") is the best cooling fluid for soft aluminium (IMO)
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[20:37:53] <chopper79> Hello, I need some help with Gantrykins. Anyone familiar with it?
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[21:03:30] <DJ9DJ> gn8
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[21:52:17] <gabewillen> alright finally got usbstreamer component working
[21:53:00] <gabewillen> though i have to admit, i used alot of the streamer.c and streamer_usr.c code :)
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[22:06:07] <mhaberler> what does it do?
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[22:12:08] Cylly is now known as Loetmichel
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[22:25:58] <gabewillen> alows you to stream data from a arm or microcontroller via usb
[22:26:22] <gabewillen> at 1.5 mb per second though your thread can't read that fast if your using a standard setup
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[22:27:51] <gabewillen> i'll find out how well it works in a minute. Going to hook it up to a high resolution encoder and see what happens
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[22:28:17] <gabewillen> im thinking about adding an echo back feature to ensure there is still a connection
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[22:31:26] <gabewillen> Installing rt-preempt kernel on my 64bit unbuntu 12.04 was the best thing i have done. Latency isn't great but makes for easy testing. it was a hassle to get the bumbleebee nvidia graphics power feature working but. It was well worth it
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[23:48:25] <jdh> http://tinyurl.com/crsu8gu my new lathe!