#linuxcnc | Logs for 2013-07-06

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[00:09:42] <andypugh> Sadly my worry is that it might make enough on ebay t make me feel guilty.
[00:15:45] <andypugh> I wish I had seen this 3 days ago! http://www.ebay.co.uk/itm/HARRISON-M250-CNC-PARTS-AND-MOTOR-/290941411815
[00:18:35] <andypugh> Actually, can anyone see a reason not to BIN and then see what is there?
[00:21:20] <cradek> the price?
[00:22:35] <andypugh> It seems inexpensive for a pair of 2kw drives and the spindle motor. Whatever the servos and other stuff are is then a bonus.
[00:23:47] <andypugh> Annoyingly I just bought a motor (£100) and drive (£60) for the Rivett yesterday.
[00:24:52] <andypugh> Though it was a 700 rpm motor, to be a bit more like line shafting.
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[00:38:01] <andypugh> Next step, find the M250 to suit :-)
[00:38:47] <andypugh> Night all
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[02:24:55] <Tom_itx> to attach a button for manual tool change indication would i be better off attaching it to iocontrol.0.tool-changed or hal_manualtoolchange.change? both are inputs
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[02:36:36] <t12_> does it matter what side of molex connectors you put the male/female pins in?
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[02:42:32] <Tom_itx> i would think so
[02:44:06] <Tom_itx> won't they only fit one way?
[02:46:31] <t12> it appears either gender fits in a jack/recepticle
[02:46:47] <t12> plug? jack?
[02:46:52] <t12> whtever they call those genders
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[02:49:40] <Tom_itx> which molex connector is it?
[02:49:42] <eric_unterhause1> I was walking across the parking lot at work, some people were wheeling a mendel 3d printer the other direction
[02:49:47] <Tom_itx> molex makes alot of connectors
[02:49:59] <t12> http://www.mouser.com/ProductDetail/Molex/19-09-2048/?qs=LQQHZ4xw2XD7FznDTh6XNg==
[02:50:03] <t12> and mating connectors
[02:50:56] <Tom_itx> the pin should go on the inner part
[02:51:03] <Tom_itx> i would say
[02:51:59] <Tom_itx> although your hdd power connectors are somewhat opposite
[02:52:30] <Tom_itx> i would follow what they do
[02:53:10] <Tom_itx> i can see why they would
[02:53:56] <Tom_itx> the female will center better on the inner connector and you will be able to see any misalignment on the male connector if it's on the outer mating part
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[02:55:36] <t12> ah that makes sense
[02:55:47] <t12> basicly female in smaller bore side of connector
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[02:56:09] <Tom_itx> that's what hdd power connectors do although they're slightly different
[02:57:08] <t12> wiring up first absurdly built geckdrive + steppers mess
[02:57:27] <Tom_itx> as does the mb power connector
[02:57:38] <Tom_itx> oh i did one of those recently
[02:58:05] <Tom_itx> i used DIN connectors on the steppers
[02:58:18] <t12> i was thinking of 4pin xlr
[02:58:34] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/cnc/psu/psu_index.php
[02:58:34] <t12> though they seem to be specced for 5A
[02:58:35] <t12> which i guess i could get away with
[02:58:38] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/cnc/psu/control7.jpg
[02:59:03] <Tom_itx> i like the solid screw connectors better
[02:59:07] <Tom_itx> the original used molex
[02:59:11] <t12> https://www.dropbox.com/sc/g1snssvk4w1hgso/3rKN2nPyFS
[02:59:21] <t12> hum
[02:59:23] <t12> cannot connect
[02:59:24] <t12> for some reason
[02:59:38] <Tom_itx> i can see it
[02:59:49] <Tom_itx> i got the 203v's
[02:59:54] <t12> i mean to yours
[03:00:02] <Tom_itx> port 81
[03:00:06] <t12> yeah
[03:00:11] <Tom_itx> my isp blocks 80
[03:00:11] <t12> maybe work blocks outbound 81 for some reason
[03:00:13] <Tom_itx> bastards
[03:00:34] <t12> yeah can connect from outside work
[03:00:38] <t12> will check when i get home
[03:00:47] <t12> kinda overbuilt the whole thing but thats my tendency
[03:00:52] <Tom_itx> my supply is a bit overkill
[03:00:59] <Tom_itx> but it was all surplus stuff
[03:01:26] <Tom_itx> i've got 3 xfrmrs instead of your 1 :)
[03:01:39] <Tom_itx> all running in parallel
[03:02:01] <Tom_itx> about 48v 18A
[03:02:24] <t12> dang
[03:02:30] <t12> yeah my transformer may actually be underkill
[03:02:33] <t12> but can always swap it out
[03:02:39] <t12> transformers are annoyingly expensive i've discovered
[03:02:47] <t12> but i'll find a good cheap one at in some peice of equipment
[03:02:47] <Tom_itx> get a toroid
[03:02:58] <Tom_itx> i would have, had i not found the surplus ones
[03:03:44] <Tom_itx> what mesa cards are you using?
[03:03:55] <t12> the uh
[03:04:07] <Tom_itx> 5i25?
[03:04:24] <t12> 7I76, 5I25
[03:04:38] <Tom_itx> yeah i can see the 7i76 on the pcb
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[03:05:19] <Tom_itx> mine is parport because they didn't have the 5i25 ready yet
[03:05:24] <Tom_itx> 7i43
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[03:06:20] <Tom_itx> how big is the diode pack?
[03:06:44] <Tom_itx> i've got one similar but also had some 25A ones so i used one of those
[03:06:55] <Tom_itx> i forget what the black one was, maybe 15A or so
[03:07:13] <t12> http://www.mouser.com/Search/Refine.aspx?Keyword=512-GBPC3510
[03:07:21] <t12> its cool how cheap they are
[03:07:40] <t12> and some tvs diode
[03:07:48] <t12> whole thing is to run at 48v
[03:07:55] <t12> but specced it all up to 80v/7a
[03:08:20] <t12> its actually going on a light duty machine, i just wanted room to have everything in place to move it to something bigger
[03:08:25] <t12> because the cost diff isnt very high
[03:08:33] <Tom_itx> one of my xfmrs looks larger than yours and i've got 3
[03:08:57] <t12> the xfmr is underspecced
[03:09:03] <t12> but i'll likely run everything at 3 or 5a for now
[03:09:06] <Tom_itx> they were marked at 6A
[03:09:55] <Tom_itx> wow you even welded the cap mount
[03:10:04] <t12> hah yeah
[03:10:12] <t12> weldings easier than drill, bolt etc
[03:10:17] <t12> lots of scrap alum around
[03:10:26] <t12> terrible welds though
[03:10:30] <Tom_itx> hope you don't decide to move stuff around
[03:10:36] <t12> hah
[03:10:39] <t12> grinder
[03:10:54] <t12> if i had to grind it all down i'd just prolly build a new one the way i wanted it
[03:11:05] <Tom_itx> i found a nice box online
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[03:12:47] <t12> i had the caps lying around from some giant UPS
[03:13:02] <t12> like a crate of those
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[03:15:01] <Tom_itx> http://www.newark.com/jsp/search/productdetail.jsp?SKU=01M6871&CMP=KNC-GPLA&mckv=|pcrid|20115734901|plid|
[03:15:18] <Tom_itx> i paid more to ship it than it cost me but still only paid about $45
[03:16:07] <t12> can you just wire parallel transformers... as expected?
[03:16:17] <Tom_itx> if they are exactly the same
[03:16:29] <t12> yeah i gotta figure out a cover for this
[03:16:31] <Tom_itx> i metered the voltage across them
[03:16:40] <Tom_itx> and it was next to nothing
[03:16:57] <Tom_itx> and you gotta get the phases right
[03:18:10] <Tom_itx> i had originally thought of running one per axis with 3 bridges but decided to parallel them instead
[03:18:36] <t12> seems like 1 per would be easier
[03:18:38] <t12> why parallel?
[03:18:41] <Tom_itx> and i used the center tap off one to get me around 24v for my SMPS input for the 5v supply
[03:18:46] <Tom_itx> 48v was too much for it
[03:19:06] <Tom_itx> it was a toss up
[03:20:23] <Tom_itx> i also found about 8' of heatsink material at the local scrap yard
[03:20:37] <Tom_itx> so i mounted the geckos to that
[03:20:48] <Tom_itx> after trimming it down of course
[03:20:59] <Tom_itx> that was a very lucky find
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[03:22:18] <CaptHindsight> ssi: http://www.ebay.com/itm/Cincinnati-750-20-dk-versipower-3axis-cnc-bed-mill-milling-machine-vert-horzn-/171068246240?pt=LH_DefaultDomain_0&hash=item27d47648e0
[03:22:53] <Tom_itx> too bad i don't have room for that
[03:22:56] <CaptHindsight> ssi: not sure if you saw this one ^^
[03:23:56] <Tom_itx> 72
[03:23:57] <Tom_itx> in x
[03:24:00] <Tom_itx> that's long
[03:24:14] <Tom_itx> low speed spindle
[03:24:21] <CaptHindsight> I have the room but I mostly work with aluminum
[03:26:08] <Tom_itx> yeah, definitely a steel machine
[03:30:57] <t12> lol
[03:30:59] <t12> the comic sans
[03:31:01] <t12> in 24pt
[03:32:01] <CaptHindsight> there are at least 4 different fonts in that ad :)
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[03:37:58] <CaptHindsight> http://www.ebay.com/itm/Kitamura-My-Center-2-CNC-Mill-/261238902455?pt=US_Heavy_Equipment&hash=item3cd30d4eb7
[03:39:25] <CaptHindsight> this was my favorite listing http://www.ebay.com/itm/Matsuura-MC-500V-CNC-Vertical-Mill-/321155781717?pt=LH_DefaultDomain_0&hash=item4ac6605455
[03:39:36] <CaptHindsight> " We no longer have staff that know how to run it. "
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[03:46:22] <t12> hm
[03:46:24] <t12> http://www.ebay.com/itm/Transformer-Doughnut-115-Primary-703VA-SEC-48V-35V-7-5V-NEW-ITEM-/290752838600?hash=item43b2383bc8
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[03:50:28] <CaptHindsight> http://www.viperservo.com/V200.htm anyone ever use these?
[03:52:21] <Tom_itx> t12, kelinginc has toroids as well
[03:53:42] <t12> hum
[03:53:46] <t12> i guess i could always use a variac
[03:54:10] <Tom_itx> http://www.automationtechnologiesinc.com/products-page/torroidal-power-supplies
[03:54:13] <CaptHindsight> http://www.automationtechnologiesinc.com/products-page/variable-ac-transformer
[03:54:29] <CaptHindsight> http://www.automationtechnologiesinc.com/products-page/torroidal-power-supplies
[03:54:36] <t12> is there a reason to not use a variac?
[03:54:37] <CaptHindsight> the new Keling ^^
[03:55:08] <Tom_itx> i don't like their new site as well
[03:56:52] <t12> hah i'd have just bought one of those
[03:56:55] <t12> failure to research
[03:57:21] <Tom_itx> me too had i not found surplus
[04:12:56] <RyanS_> These guy is a showoff http://www.micro-machine-shop.com/mensuration_instruments.htm you can see a picture of a round column milling machine and that pretty much says it all.
[04:17:33] <Tom_itx> he's got a bunch of fancy tools. i wonder if he knows how to use em
[04:19:07] <jdh> cool toys
[04:19:10] <RyanS_> I haven't actually seen any impressive projects he's produced
[04:20:38] <CaptHindsight> how about a single web page that is seven miles long?
[04:20:54] <RyanS_> It's all just tools,
[04:21:14] <Tom_itx> they're all too clean too
[04:21:44] <CaptHindsight> clean tools are a clean desk, how much work is he actually doing?
[04:22:28] <Tom_itx> i could show a similar equipped shop that _is_ used
[04:22:37] <CaptHindsight> the same rule does not apply to car interiors or bathrooms
[04:23:46] <RyanS_> I don't think even professional workshops have that much measurement stuff?
[04:25:00] <Tom_itx> http://www.users.qwest.net/~kmaxon/page/side/mill12_137.htm
[04:25:08] <Tom_itx> another similar
[04:25:34] <RyanS_> ooo, he made some brackets, genius
[04:25:50] <Tom_itx> that guy gets stuff done
[04:25:58] <Tom_itx> you should look around his site
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[04:28:09] <Tom_itx> http://www.users.qwest.net/~kmaxon/page/side/mill100_137.htm
[04:28:32] <RyanS_> I've hired some help to tinker in the shed/workshop ( due to my disability), six hours a week you would think was an okay amount,but time gets used up pretty quickly
[04:30:26] <RyanS_> Most of it isn't my stuff so I spend too much time hunting for mixed up drill bits
[04:31:20] <RyanS_> At least that guy has the milling machine and lathe to match the expenditure on measurement staff
[04:31:32] <RyanS_> stuff
[04:32:07] <Tom_itx> one project was an injection mold machine
[04:52:48] <t12> its midly hard to get the crimps right
[05:01:06] <RyanS_> I'm just trying to get a 5 inch chuckadapter sorted for the lathe, but I don't have any measurement tools I can trust
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[05:24:17] <RyanS_> Really accurate can opener http://ecatalog.mitutoyo.com/Can-Seam-Micrometers-Series-147-C1126.aspx
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[06:08:11] <t12> heh the transformer thumps when charging the caps
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[06:19:13] <t12> https://www.dropbox.com/sc/9887nl0hx8lipfm/3Wy1v1O-hy
[06:19:16] <t12> partial success!
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[06:36:49] <DJ9DJ> moin
[06:39:04] <CaptHindsight> t12: what value caps or part number?
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[06:39:49] <t12> BHC 400uF 300v
[06:39:52] <t12> er
[06:39:54] <t12> 4400
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[07:21:09] <mrsun_> didnt find any bigger caps? :P
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[08:52:53] <Loetmichel> mornin'
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[10:48:48] <jthornton> andypugh, what is gksudo?
[10:51:40] <jthornton> I noticed it in one of your posts
[10:52:08] <Valen> graphical sudo
[10:52:52] <jthornton> interesting
[10:53:07] <jthornton> how does that change from just sudo?
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[10:53:49] <jthornton> oh it just gives y ou the black screen password prompt
[10:54:28] <jthornton> and you get the little black dots for your password a big help for windows users
[10:58:55] <Valen> yes
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[13:16:40] <AndChat|681225> Test
[13:18:10] <PetefromTn> RY Lima Charlie
[13:18:21] AndChat|681225 is now known as Heinz_63
[13:18:39] <Heinz_63> Working :)
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[13:45:08] <Loetmichel> <- designing monitor enclosure, second version ;)
[13:52:29] <Tom_itx> so i guess if i use the hal_manualtoolchange i can't hook into the iocontrol.0.tool-changed signal externally
[13:52:43] <Tom_itx> ?
[13:53:23] <Tom_itx> i'd like to leave it active in axis but add a button to my pendant for 'tool changed'
[13:54:25] <Tom_itx> i tried using an 'or2' on it but didn't get far
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[14:04:47] <Tom_itx> or do i need to add 'loadusr io' even though the signals show up already?
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[14:19:51] <Heinz_60> Pictures? @loetmichel
[14:20:14] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=14310
[14:20:24] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=14313
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[14:22:35] <Heinz_60> Very nice
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[14:23:10] <Loetmichel> second version will be 10mm more wide, so i can put in the lcd panel AFTER mounting the frame
[14:23:21] <Loetmichel> and made of 0,8mm brass sheet so i can solder it
[14:23:52] <Loetmichel> just trying to slice it to parts fitting my small mill ;-)
[14:24:46] <Heinz_60> PppppppppppppQAAa.zz
[14:24:54] <Heinz_60> Material?
[14:26:05] <Loetmichel> brass
[14:26:13] <Loetmichel> or did you ean the one on the photos?
[14:26:18] <Loetmichel> 2mm Lexan
[14:26:33] <Loetmichel> aehm... 2mm styrol glass
[14:26:36] <Loetmichel> not lexan
[14:26:51] <Loetmichel> and taped with aluminium foil tape
[14:27:31] <Heinz_60> Als Schirm?
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[14:28:52] <Loetmichel> just for the optics
[14:29:00] <Loetmichel> its a prototype, anyway
[14:29:02] <Heinz_60> Oh ok
[14:29:20] <Loetmichel> just need some small moniotr for my mill
[14:29:33] <Loetmichel> because the 15" is way to big to fit in the rack
[14:29:52] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=12569
[14:30:43] <Heinz_60> Oh really big
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[14:33:08] <Loetmichel> more like: the machine is a bit small
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[17:00:15] <IchGuckLive> hi all
[17:00:35] <IchGuckLive> Heinz_60: does the isel turn
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[17:10:38] <Heinz_60> Yeah, but wrong direction
[17:10:54] <IchGuckLive> the E7 pin
[17:11:01] <IchGuckLive> high low
[17:11:17] <IchGuckLive> put it to a 7i76 pin
[17:11:28] <IchGuckLive> and use it as direction output
[17:11:56] <Heinz_60> But how to change direction in linuxcnc
[17:12:14] <Heinz_60> Or in the c++ file
[17:12:23] <IchGuckLive> net spindle-fwd motion.spindle-forward =>
[17:12:42] <IchGuckLive> this will set the pin low or high
[17:14:26] <IchGuckLive> m3 CW M4 CCw
[17:15:21] <Heinz_60> Ok, will test it monday
[17:15:48] <IchGuckLive> does the componenent what it shoudt at 500 ,2500 and so o n
[17:16:18] <IchGuckLive> did you try to change speed within the mdi
[17:16:47] <Heinz_60> Yes and did a spindle bar
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[17:17:00] <IchGuckLive> ok
[17:17:15] <IchGuckLive> so you are becoming a PRO within one week
[17:17:29] <IchGuckLive> B)
[17:17:46] <Heinz_60> Monday i will do a measurement for the Spiele speed
[17:17:50] <Heinz_60> Spindle
[17:18:08] <IchGuckLive> rpm meter
[17:18:19] <IchGuckLive> of scale aircroft modell is best
[17:18:43] <IchGuckLive> but i gues isel has some calbration done
[17:19:05] <Heinz_60> I hope so
[17:19:14] <IchGuckLive> Heinz_60: in the integrater manual look at page 156
[17:19:34] <IchGuckLive> to get the pins for your buttons and bars
[17:19:55] <Heinz_60> I have a bar
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[17:20:18] <Heinz_60> And 3 hal Infos for homex
[17:20:34] <Heinz_60> Homey and z
[17:21:13] <IchGuckLive> the info shoudt be in the number bar on the screan
[17:21:17] <IchGuckLive> as it is homed
[17:21:32] <IchGuckLive> or manual button homing
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[17:21:47] <Heinz_60> Yes, but info led for grenztaster
[17:21:50] <IchGuckLive> as i think it up to you
[17:22:01] <IchGuckLive> ok
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[17:53:02] <Heinz_60> M
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[17:53:46] <Heinz_60> M
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[18:45:09] <JT-Shop> He has built up a reluctant expertise with these boards (he hates them), there are links to wikis, sample configs, pin outs, manuals etc in the various posts
[18:45:16] <JT-Shop> LOL at ArcEye
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[18:57:06] <archivist> I wonder if Florian takes the bait :)
[18:57:53] <JT-Shop> if that is cncbasher yes he took the bait
[18:58:21] <JT-Shop> btw, I'm still filling the rotary table with oil :(
[18:58:23] <archivist> nah on the mailing list re vismach
[18:58:31] <archivist> hehe
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[18:59:06] <archivist> mine never mentioned oiling it...so I didnt
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[18:59:33] <JT-Shop> oh, I don't follow the mailing list too close... it's usually to confusing
[18:59:49] <archivist> I dont follow the forum...same reason
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[19:07:53] <cradek> I gateway the forum to my email and then don't read that
[19:08:32] <andypugh> I read everything.
[19:08:54] <cradek> I probably read the subject lines on everything
[19:11:20] <archivist> I dont have any automation set up on my mail so I have to read something to ferret them away, beginning to hate mailing lists without [listname] where one has to dig deeper than subject sometimes
[19:12:09] <cradek> surely everyone has List-Id headers by now
[19:12:48] <cradek> I simply can't imagine tolerating email without smart filtering
[19:13:54] <JT-Shop> what does smart filtering do?
[19:14:32] <cradek> at the most basic level, put various things into various folders
[19:14:43] <JT-Shop> ah ok rules
[19:15:21] <cradek> but I have a little more smarts than that, for instance, things that are known to be periodic - the old ones get stuffed in a folder, so only the latest one is ever in my inbox
[19:15:23] <JT-Shop> that does help me putting dev in dev folder and user in user folder
[19:15:42] <JT-Shop> cool
[19:16:06] <cradek> a few important things, if seen, are forwarded as a text to my phone
[19:17:38] <cradek> like if certain things are seen on craigslist it forwards as a text, but waits until daytime so it doesn't wake me up
[19:18:01] <cradek> etc etc :-)
[19:18:05] <JT-Shop> that's pretty smart filtering
[19:18:40] <cradek> yeah time spent setting up smarts pays off many times over
[19:31:38] <AR_> http://i.imgur.com/49WW7p7.jpg
[19:31:45] <AR_> just need to mill out the lower and it's ready to go
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[19:32:36] <Aero-Tec3> I have a 3 inch OD 6061 0.25 wall pipe
[19:32:55] <Aero-Tec3> mixed car & HSS tooling
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[19:33:37] <Aero-Tec3> any recommendations on spindle speeds?
[19:33:50] <andypugh> That makes me wonder if anyone does a £D-printable Gnu :-)
[19:34:13] <Aero-Tec3> one HSS cutter is a .25 int grooving tool
[19:34:16] <andypugh> (3D Printable Gnu, I mean)
[19:34:53] <Aero-Tec3> having on and off tool chatter problems
[19:35:02] <AR_> a Gnu
[19:35:06] <AR_> lol
[19:37:35] <archivist> Aero-Tec3, you need to vary speeds and feeds and too geometry....and make sure the machine and item are rigid enough (add support sometimes)
[19:37:45] <archivist> too/tool
[19:38:31] <Aero-Tec3> the problem is the .25 int groove cutter
[19:38:52] <archivist> Aero-Tec3, parting/grooving often needs to be slower
[19:39:36] <archivist> or done with a narrower tool and a few bites
[19:40:06] <Aero-Tec3> what would you recommend for feed per rev?
[19:40:17] <Aero-Tec3> HSS .25 cutter
[19:40:18] <archivist> the noise should tell you if it is machine, tool, work vibration
[19:40:28] <Aero-Tec3> would love to have a smaller cutter
[19:40:44] <archivist> make it smaller, grind it
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[19:41:12] <archivist> how deep are you grooving
[19:42:02] <Tom_itx> 777 down in SF
[19:42:02] <Aero-Tec3> 0.125
[19:42:47] <archivist> maybe you would be better with a neutral carbide tip that is sharp, I use a sandvick parting/grooving tip
[19:43:32] <Aero-Tec3> right now using 0.002 PR
[19:43:53] <Aero-Tec3> also HSS cutoff
[19:44:54] <Aero-Tec3> also 0.002 per rev feed
[19:45:08] <archivist> the tip I like is N151.2-250-5F
[19:45:10] <Aero-Tec3> but 0.1 width
[19:46:09] <archivist> lubrication matters too so the chips can flow easily
[19:49:02] <Aero-Tec3> using cooling fluid
[19:49:57] <Aero-Tec3> as well as alumatap
[19:50:58] <Aero-Tec3> the boring is cooling and the grooving is the tapping juice
[19:53:14] <Aero-Tec3> just called the locale metal working tool supplier, no go for int grooving
[19:53:28] <Aero-Tec3> any ideas on making one up?
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[19:56:21] <archivist> as it is internal I usually grind something to suit
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[20:11:04] <archivist> Aero-Tec3, note height setting of the tool if too low it digs in, springs up, here the tool stiffness matters
[20:11:53] <archivist> tool itself whistles with a high pitched scream
[20:12:49] <Aero-Tec3> I have it setup real short so very stiff
[20:13:26] <Aero-Tec3> how high of center do you recommend?
[20:14:17] <Aero-Tec3> I cut the tubing into 5 inch lengths
[20:14:18] <archivist> not much at all if any as it reduces accuracy if off center
[20:14:49] <Aero-Tec3> each part takes about .75 inchs including the cutoff cut
[20:15:31] <archivist> how many parts per tube
[20:15:38] <Aero-Tec3> 6
[20:15:54] <Aero-Tec3> 100 parts total
[20:16:09] <archivist> does it get worse or better over the 6
[20:16:17] <Aero-Tec3> per order, 2 to 3 orders per year
[20:16:29] <Aero-Tec3> the shorter the better
[20:16:31] <archivist> it/the chatter
[20:16:42] <Aero-Tec3> tube rings the longer it is
[20:16:59] <archivist> check spindle bearings
[20:17:24] <Aero-Tec3> chatter marks on the int Oring groove
[20:17:37] <Aero-Tec3> spindle is good
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[20:18:41] <archivist> yes but the overhang from the spindle means chatter due to spring in the spindle
[20:19:04] <archivist> add support to avoid that
[20:19:50] <Aero-Tec3> or fab up a smaller grooving tool
[20:20:18] <archivist> a couple of roller supports under the tube
[20:20:31] <Aero-Tec3> smaller grooving tool would allow for higher RPM
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[20:20:55] <archivist> worth a try
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[20:21:12] <Aero-Tec3> if I had them I would try them
[20:21:34] <Aero-Tec3> will have to make some up for this type of problem
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[20:21:54] <Aero-Tec3> support rollers would help
[20:22:14] <Aero-Tec3> but would they not also get in the way?
[20:22:30] <archivist> on one off I have just used a stick of wood, bit naughty :)
[20:23:06] <archivist> on one resonating item fingers would stop the problem
[20:23:20] <Aero-Tec3> lol
[20:23:43] <archivist> never do this at home children!
[20:23:46] <Aero-Tec3> I have used my hand on the tube, helps big time
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[20:24:32] <Aero-Tec3> tube ring is more the problem
[20:24:45] <Aero-Tec3> support rollers would help big time
[20:26:37] <Aero-Tec3> one support rail under the tube but not sticking out past the tooling so as not to hit chuck may work
[20:28:03] <Aero-Tec3> the rail mounted to the carriage would allow for support for different tool lengths
[20:28:14] <archivist> what may be even better is a collet rather than 3/4 jaw chuck
[20:28:38] <Aero-Tec3> ?
[20:28:52] <Aero-Tec3> 8 inch lathe chuck
[20:29:30] <archivist> or do the internal ops as a second op after finishing the outer and parting so it is close to chuck/collet
[20:29:48] <Aero-Tec3> would need to be a very big collet for a 3 inch OD tube
[20:30:53] <archivist> actually you can make one, not too hard
[20:31:31] <archivist> would get the all round grip and be close to spindle
[20:31:32] <Aero-Tec3> face, bore ID to size, groove, turn OD and add step down, then part
[20:32:32] <archivist> face outer, part, second op up close to spindle inner ops
[20:33:31] <Aero-Tec3> that is a good idea
[20:33:46] <JT-Shop> got a photo of the part your making?
[20:37:25] <archivist> or use much larger soft jaws for second op for better holding
[20:39:08] <archivist> this sort of shape to start before you cut the custom holding dia fleabay 360675282418
[20:40:38] <archivist> top row but on a bigger scale item 251299255986
[20:46:13] <Aero-Tec3> took pix but fighting phone to get them to computer
[20:47:19] * JT-Shop hands Aero-Tec3 a hammer for the phone
[20:47:44] <Aero-Tec3> lol
[20:49:18] <JT-Shop> http://www.ebay.com/itm/New-6-DOF-Manipulator-Aluminum-Robot-Arm-Kits-for-Smart-Car-Base-/160998716216?pt=LH_DefaultDomain_0&hash=item257c457338
[20:50:43] <archivist> ew toy....
[20:51:52] <JT-Shop> lol just barely a toy
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[21:00:53] <Aero-Tec3> even calling it a toy would be over the top
[21:00:58] <cradek> they swiped the only image from somewhere and edited out the name. the whole thing might be a scam.
[21:01:20] <JT-Shop> I was wondering about the blurred part of the image
[21:01:28] <cradek> yeah it's just a bunch of RC servos glued together
[21:01:33] <Aero-Tec3> cradek, do you make this thing?
[21:01:45] <cradek> ??
[21:02:28] <Aero-Tec3> was thinking the res of movement would be to course for any real world use
[21:02:31] <cradek> make what?
[21:02:41] <Aero-Tec3> the arm
[21:02:54] <cradek> of course not
[21:03:00] <Aero-Tec3> but I miss read, thought they swipped the pix from you
[21:03:06] <cradek> would I be insulting it then? haha
[21:03:21] <cradek> no, I just notice from looking at the picture that they have blurred out someone else's name
[21:03:50] <Aero-Tec3> ok pix in comp
[21:03:53] <Aero-Tec3> now what
[21:04:06] <Aero-Tec3> need a good pix upload place
[21:04:27] <Aero-Tec3> is there a pixbin?
[21:04:27] <JT-Shop> imagebin
[21:04:39] <JT-Shop> imagebin.org
[21:08:42] <Aero-Tec3> http://imagebin.org/263616
[21:10:34] <Aero-Tec3> http://imagebin.org/263617
[21:11:30] <Aero-Tec3> http://imagebin.org/263618
[21:12:09] <JT-Shop> pretty thin cross section
[21:12:25] <JT-Shop> you ever use gimp to scale your images?
[21:14:08] <JT-Shop> I've used these for parts like that before http://ecx.images-amazon.com/images/I/41TrXuqj9YL._SL500_AA300_.jpg
[21:14:09] <Aero-Tec3> also looked in the cat of my main tooling supplier and did not find sandvick parting/grooving tool listed
[21:14:22] <JT-Shop> gotta be making a few or the collet is too much
[21:14:27] <Aero-Tec3> gimp?
[21:14:38] <Aero-Tec3> guess not have no idea what it is
[21:14:57] <JT-Shop> GIMP is the GNU Image Manipulation Program. It is a freely distributed piece of software
[21:15:01] <JT-Shop> http://www.gimp.org/
[21:15:07] <JT-Shop> I love it
[21:19:48] <Aero-Tec3> downloading it now
[21:20:18] <JT-Shop> after you open an image just right click in the image for the complete menu
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[21:28:32] <DJ9DJ> gn8
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[23:45:47] <JT-Shop> goodnight
[23:47:05] <JT-Shop> http://www.youtube.com/watch?v=egX9N8yOgaU
[23:47:06] <Tecan> (egX9N8yOgaU) "Goodnight Sweetheart Goodnight" by "HaloScreenshots" is "Music" - Length: 0:02:47
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