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[00:00:35] <furrywolf> cradek: free software is unamerican.
[00:01:26] <cradek> that doesn't mean americans don't work on it :-)
[00:01:31] <zeeshan> free software sounds very russian
[00:01:31] <malcom2073> I figure GPL is fairly american
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[00:03:00] <CaptHindisght> invented by hippies
[00:05:06] <CaptHindisght> hippies are some kind of american commies that started in the 60's
[00:05:12] <CaptHindisght> ask anyone :)
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[00:07:29] <Cromaglious__> GPL is very ameriacan hippy
[00:07:40] <zeeshan> i dont seriously understand this
[00:07:43] <zeeshan> either something is wrong in this paper
[00:07:47] <zeeshan> or im going senile
[00:08:05] <CaptHindisght> join the club
[00:08:05] <zeeshan> prolly me
[00:08:06] <zeeshan> https://www.dropbox.com/s/rvapvzt38r5grqv/indentation%20of%20shape%20memory%20polymers%2C%20characterization%20of%20thermomechanical%20and%20shape%20recovery%20properties.pdf?dl=0
[00:08:11] <zeeshan> figure 8
[00:08:28] <zeeshan> they're using a "2.5mm spherical indenter" in their FE simulation
[00:08:37] <zeeshan> yet there is a goddamn cone showing up?
[00:08:38] <zeeshan> i dont get it
[00:09:21] <zeeshan> i hate fe simulations
[00:09:26] <zeeshan> they're such an easy to way to scam results
[00:09:42] <furrywolf> they're using way too low of resolution.
[00:09:52] <zeeshan> dude look @ that
[00:09:56] <furrywolf> it's a cone because they don't have enough elements to make it rounded.
[00:09:56] <zeeshan> even if it was less elements
[00:10:10] <zeeshan> okay, and how can they be so sure about their results
[00:10:12] <CaptHindisght> is it a pointy sphere?
[00:10:18] <zeeshan> if they havent done a mesh sensitivity analysis?
[00:11:10] <furrywolf> I'd say that simulation was bunk, without more elements.
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[00:11:49] <CaptHindisght> Department of Materials Science and Engineering, Stony Brook University, - doesn't surprise me
[00:11:58] <zeeshan> why CaptHindisght
[00:12:19] <CaptHindisght> worked there last year
[00:12:30] <zeeshan> lol
[00:12:45] <zeeshan> ask them whats going on
[00:12:50] <zeeshan> i was going to use this one paper as a reference
[00:12:59] <zeeshan> but if theyve got mistakes like this
[00:13:02] <zeeshan> its not good one to use
[00:13:03] <zeeshan> :[
[00:14:27] <furrywolf> the description on the next page also disagrees with the description under the image. the image says it's after heating a fixed indentation to above the recovery temperature, while the next page says it's an indentation done while already at an elevated temperature.
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[00:14:48] <zeeshan> lol
[00:14:52] <zeeshan> m,aybe they put the wrong figure there
[00:15:08] <CaptHindisght> probably just bunch of stuff jammed into the paper before the deadline
[00:16:45] <zeeshan> man i wanna work on my lathe
[00:16:48] <zeeshan> but this stuff is takin over :/
[00:17:05] <CaptHindisght> best part of Stony Brook was the yogurt place down the street and the sushi bar about 2 town over
[00:17:05] <zeeshan> furrywolf: about the brakes
[00:17:21] <zeeshan> i think its important to calculate the forces :/
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[00:19:41] <furrywolf> I think you need to figure out whether you need to redesign the brakes, redesign the exhaust, or redesign the frame rail.
[00:19:58] <zeeshan> i looked @ redesigning the exhaust
[00:20:00] <zeeshan> its no good
[00:20:16] <zeeshan> you saw the pics :)
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[00:22:02] <furrywolf> the pics didn't tell me anything except one way of doing it. it didn't tell me it was the only way to do it, nor did it show me anything, at all, about what the car looks like.
[00:22:04] <furrywolf> bbl, time for work
[00:25:39] <CaptHindisght> zeeshan: call him tomorrow
http://scgp.stonybrook.edu/people/faculty
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[00:48:24] <zeeshan> lol CaptHindisght
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[03:00:00] * furrywolf curls up and yawns
[03:02:31] * zeeshan going to sleep early :p
[03:02:45] <furrywolf> I hate doing that. makes me feel useless.
[03:02:52] <zeeshan> long day tomorrow :/
[03:06:15] <t12> w/win 12
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[03:54:02] <[cube]> zeeshan:
https://www.youtube.com/watch?v=gkE0vk_oDAU
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[04:35:50] <Cromaglious> That was an interesting video
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[07:49:39] <Deejay> moin
[08:02:20] <eventor> moin
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[15:54:02] <jdh> idle much?
[15:55:50] <alex4nder> so idle
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[16:30:13] <ssi> D:
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[16:31:56] <brlcad> seb_kuzminsky: how are the students coming along?
[16:32:03] <brlcad> got any candidates?
[16:32:19] <skunkworks> I think seb is camping until the end of the week...
[16:32:25] <cradek> brlcad: I think he's away until Thursday
[16:32:33] <brlcad> oof! okay
[16:32:42] <brlcad> anyone else here entertaining gsoc students?
[16:33:30] <cradek> I think he's the only one doing it directly
[16:33:59] <brlcad> have not students been showing up here and asking questions? or some other place you guys talk?
[16:34:17] <brlcad> if not, I can help fix that -- but they need someone to talk to
[16:34:25] <cradek> yes I think there have been a few showing up here
[16:34:43] <cradek> or maybe it was the linuxcnc-devel channel
[16:34:51] <cradek> also a bit on the devel mailing list
[16:35:05] <brlcad> ah, thx -- didn't realize there was a separate channel
[16:36:00] <brlcad> yeah, I see now that he directed them to that channel -- thx, will continue/watch/discuss there :)
[16:36:07] <cradek> welcome
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[16:36:25] <skunkworks> I feel like we failed the test...
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[16:44:39] * Jymmm tattoos a Big "L" on skunkworks' forehead.
[16:47:36] <Jymmm> skunkworks: It's okey though, it's a watercolor tattoo of an L
http://jwa.joelwrightart.netdna-cdn.com/wp-content/uploads/2013/10/tigerlilytattoo.jpg
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[17:34:07] <heathmanc> PCW: I tried and I give up. Anyway you could help me with the firmware for a 4i69?
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[17:43:27] <MrSunshine> hmm is there any pirate versions of the mitee uniforce clamps? =)
[17:52:52] <_methods> yeah if you have a peg leg
[17:53:00] <_methods> you can make all the pirate ones you want lol
[17:55:18] <ssi> lol
[17:55:41] <archivist> is it talk like a pirate day already
[17:57:17] <_methods> argh
[17:57:35] <_methods> i am surprised though they make some dirt cheap destaco knockoffs
[17:57:40] <_methods> but not the mitee bites
[17:57:49] <_methods> i guess they don't know about them in china yet
[17:58:42] <PCW> heathmanc: what daughtercards do you have?
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[18:02:31] <heathmanc> 7i48 7i37ta
[18:02:45] <heathmanc> this is for the 4i69-25
[18:04:48] <archivist> MrSunshine, I hope you are not thinking of those clamps and wood
[18:05:14] <MrSunshine> archivist: why ? =)
[18:05:19] <_methods> crush
[18:05:25] <_methods> wood smash
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[18:05:47] <archivist> and they dont have much flex life designed in
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[18:06:12] <MrSunshine> realy was thinking if one could make some out of some kinda flexible plastic to use for setups in the router machine =)
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[18:07:24] <MrSunshine> i need some fast acting clamp that does not interfear with the top side to much and is easy to clamp/unclamp ... and that i can have high density with
[18:08:00] <_methods> why not just machines jaws in a regular vise
[18:08:22] <archivist> he wants to drill 2000 bits of wood
[18:08:26] <_methods> yeah sorry
[18:08:30] <_methods> i forgot high density
[18:08:59] <MrSunshine> :P
[18:09:13] <MrSunshine> and i want a viable alternetive to other high count jobs int he future =)
[18:09:16] <_methods> well with wood i think you could get away with doing some stuff with destacos and machined jaws
[18:09:40] <XXCoder> _methods: you sure your skill isnt high density too? ;) joking
[18:09:46] <_methods> then you just pull a couple togggle clamps and go
[18:09:54] <_methods> hehe
[18:10:08] <_methods> my taste in women is high density
[18:10:09] <_methods> lol
[18:10:38] <XXCoder> so you don't date unless you actually detect gravoty around woman? ;)
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[18:10:46] <_methods> chubby chaser
[18:11:06] <_methods> they used to call me captain ahab in the army 'cause i was always harpooning white whales
[18:11:14] <ssi> lawd
[18:11:23] <_methods> hahahhaha
[18:11:31] <XXCoder> lol
[18:11:48] <Jymmm> _methods: HDPE sex doll???
[18:11:53] <_methods> hahah
[18:11:55] <_methods> UHMW
[18:12:03] <Jymmm> delrin?
[18:12:18] <MrSunshine> and about the crushing with those clamps ... isnt that all about how hard you tighten them ? :PÖ
[18:12:29] <MrSunshine> its just like 2000 lbs of preasure
[18:12:34] <_methods> yeah but they ramp up in force real fast
[18:12:44] <MrSunshine> *1500
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[18:13:56] <MrSunshine> and with a piece of oak between the part and the clamps or something like that it spreads the force to a greater area of contact on the actual block =)
[18:14:03] <MrSunshine> bu .. if low flex count it sucks
[18:14:38] <MrSunshine> i wish i had a 3d printer to prototype stuff like this with :P even tho the parts would suck ... atleast one can test out some stuff to see if it would be viable =)
[18:15:53] <_methods> just make some out of plastic
[18:15:58] <_methods> you have a router right?
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[18:16:35] <MrSunshine> hmm ... why didnt i think of that.. i can just mill them from the side .. haha
[18:16:43] <MrSunshine> was thinking of how i would get angles etc in :P
[18:16:56] <XXCoder> MrSunshine: I wish I have a 3d printer, I would be able to make bushings for car wipers
[18:17:16] <MrSunshine> you need lots of those? :P
[18:17:19] <MrSunshine> _methods: thanks! =)
[18:17:23] <_methods> np lol
[18:17:29] <MrSunshine> sometimes i love some people more than other :P
[18:17:29] <_methods> not sure how i helped.........
[18:17:54] <MrSunshine> _methods: haha ... that you mentioned againt hat i can do them in the machine .. so i twisted the part around in my head and figured out how i would make them =)
[18:18:08] <_methods> oh hehe
[18:18:16] <_methods> well let us know how it works
[18:18:16] <XXCoder> yeah sometimes even asking person who dont know can help
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[18:18:26] <XXCoder> explaining can trigger "oh wait"
[18:18:28] <MrSunshine> just lay the part down ...
http://www.miteebite.com/products/m_uniforce_e.html got he drawings and dimensions there =)
[18:18:42] <_methods> yeah they have all the solid models on there too
[18:18:47] <_methods> for all their clamps
[18:19:10] <MrSunshine> angles and everything is there ... so prottyping them is a breeze .. then just make em thicker later =)
[18:19:42] <XXCoder> MrSunshine: your shape has holes inside? could drill 3 holes, bolt em down then let machine do outsides, then add clamps to hold outside when its cutting that hole area
[18:19:43] <MrSunshine> so now i just need some kind of plastic to make them out of ... :P
[18:20:10] <MrSunshine> XXCoder: just cut it all out except cut lose the bottom
[18:20:15] <MrSunshine> then bandsaw them off
[18:20:33] <XXCoder> not bad yeah or thicker plate then plane one side off
[18:20:36] <MrSunshine> just do it in the right order down so they dont start to flex or not cut straight throught the piece
[18:20:42] <XXCoder> assuming you has a plane
[18:21:06] <MrSunshine> but ... plastic .. i do not have .. i could make them out of mdf to see if it works first :P
[18:21:13] <MrSunshine> haha
[18:21:18] <MrSunshine> mdf .. the prototyping material :P
[18:21:25] <MrSunshine> hell i could even cut them in aluminium ...
[18:21:29] <XXCoder> mdf... the magic "wood"
[18:21:42] <MrSunshine> need to reconvert my X1 to cnc again :P
[18:23:03] <MrSunshine> this channel i good to bounce ideas in ... you get a smackaround from archivist now and then but its totaly worth it :P
[18:23:18] <XXCoder> just dont forget your flame suit
[18:23:46] <MrSunshine> flames are good ... they are what boasts new ideas and new thinking ...
[18:23:53] <MrSunshine> its easy to get cought in just one way to think
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[18:25:01] <MrSunshine> was to a friend before .. he had a thingie for his garden tractor laying on the floor .. he had been looking at it for days .. couldnt figure out how stuff goes together and thought alot of stuff was missing .. i came and it took me 5 mins to put it together for him :P
[18:25:06] <MrSunshine> new eyes .. new thinking =)
[18:26:57] <XXCoder> yeah
[18:30:49] <MrSunshine> but problem now is the plastic ... and would be nice with an upcutting 4mm or so bit ... only have a downcutting ...
[18:31:05] <XXCoder> upcutting?
[18:31:36] <MrSunshine> XXCoder: up spiral
[18:31:50] <XXCoder> thats weird
[18:31:54] <MrSunshine> why ?
[18:32:06] <XXCoder> it means it would cut all way down then spirl out?
[18:32:11] <MrSunshine> up spiral, down spiral .. compression (both up and down on same bit)
[18:32:12] <XXCoder> or am I misunderstanding
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[18:32:25] <Rab> Spiral saw drywall bit:
http://www.dremel.com/en-us/Tools/Pages/ToolDetail.aspx?pid=561
[18:32:28] <MrSunshine> XXCoder: ordenary endmills are usaly up spiral .. drawing cips upwards
[18:32:36] <MrSunshine> and leaving burr on top side ..
[18:32:41] <MrSunshine> downcutting pushes them down insted
[18:32:42] <Rab> Meant to make debris go into the wall.
[18:32:45] <XXCoder> oh
[18:32:50] <MrSunshine> leaving a nice surface finnish on top side
[18:32:56] <XXCoder> place I work call it climb cut
[18:32:57] <MrSunshine> very nice when doing slotting etc in wood =)
[18:33:04] <XXCoder> forgot what down version is called
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[18:33:22] <MrSunshine> climb cut is a way to cut not how you push the swarf :P
[18:33:41] <MrSunshine> http://cdn1.thewoodwhisperer.com/wp-content/uploads/spiral-bits.jpg
[18:33:57] <XXCoder> looking
[18:34:07] <XXCoder> oh
[18:34:19] <Rab> http://www.cnccookbook.com/CCCNCMillFeedsSpeedsClimbConventional.htm
[18:35:14] <MrSunshine> XXCoder: then you have compression ... bottombit draws up and top pushes down
[18:35:14] <archivist> dont confuse climb milling and up/down spiral cut
[18:35:17] <XXCoder> theres another that goes both ways
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[18:35:33] <XXCoder> bottom up and top down
[18:35:38] <XXCoder> strange one
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[18:36:25] <Rab> XXCoder, interesting...maybe that leaves a harder edge on certain materials?
[18:36:34] <XXCoder> no idea
[18:36:49] <Rab> Compacting MDF, maybe.
[18:37:23] <XXCoder> http://blog.cnccookbook.com/2012/04/06/cnc-router-cutters-types-and-how-to-use-them/
[18:37:25] <XXCoder> found it
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[18:38:54] <XXCoder> diamond cut is new to me
[18:40:52] <XXCoder> used big corncob before. damn is it loud lol
[18:41:08] <XXCoder> I still dont hear it but I sure can feel it
[18:42:22] <ssi> lol
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[18:50:11] <_methods> ummm
[18:50:17] <XXCoder> that page suggests using down for finish as it will be cleaner
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[18:55:07] <_methods> omg finally a worthy kickstarter
[18:55:10] <_methods> http://www.theverge.com/2015/3/24/8284603/super-troopers-2-indiegogo-broken-lizard
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[18:55:36] <XXCoder> interesting
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[18:57:18] <MrSunshine> Rab: its made to leave a good finnish on both sides of materials
[18:57:35] <ssi> anyone have any experience with combination drill/taps?
[18:57:41] <XXCoder> MrSunshine: if thats a concern it might be useful for you
[18:57:43] <Rab> MrSunshine, interesting.
[18:58:02] <ssi> something like this
[18:58:02] <ssi> http://www.mcmaster.com/#2748a22/=wg9i1k
[18:58:13] <MrSunshine> for some projects .. ofc its usefull =)
[18:58:35] <MrSunshine> good quality router bits a hella-expensive tho ...
[18:59:12] <MrSunshine> got a 8mm i ned to replace .. hell a new one is 60 bucks ...
[18:59:43] <XXCoder> 8mm em 60 bucks ouch
[19:00:10] <MrSunshine> but they are worth it =)
[19:00:46] <XXCoder> I bet, though for start I would use el cheapo ems for myself. till I get enough experence and get idea on what I dop
[19:00:50] <Rab> ssi, for $15.47 I wish they'd mention the brand...McMaster is annoying in that respect.
[19:01:03] <ssi> most of their tooling like that is US made at least
[19:01:10] <ssi> I've never been dissatisfied with a tool I've bought from them
[19:01:12] <_methods> might be worth a shot
[19:01:13] <MrSunshine> the ones i buy are onsrud =)
[19:01:18] <ssi> endmills usually end up being niagara
[19:01:27] <ssi> taps are typically greenlee
[19:01:36] <XXCoder> high speed steel good for wood?
[19:01:37] <ssi> I've just never used a drill/tap like that
[19:01:41] <MrSunshine> XXCoder: nooo
[19:01:52] <ssi> I need to come up with a semi-automated way to drill and tap a thousand 6-32 holes without a CNC mill
[19:01:55] <MrSunshine> do not get many mm before they are dull and starts to burn the wood =)
[19:01:59] <ssi> thinking about a tapping head and a drill/tap
[19:02:07] <mozmck> I tried an onsrud, and found that a cheap solid carbide endmill worked considerably better, and cost half the price.
[19:02:08] <XXCoder> mrqwhat is?
[19:02:16] <XXCoder> MrSunshine: what are good for wood?
[19:02:18] <heathmanc1979> I get many feet out of his in wood
[19:02:18] <_methods> ssi: what material?
[19:02:18] <XXCoder> plastics too
[19:02:22] <MrSunshine> XXCoder: carbide
[19:02:23] <ssi> 304 stainless :/
[19:02:24] <heathmanc1979> Hss
[19:02:29] <_methods> oh jesus
[19:02:31] <ssi> hahah
[19:02:40] <Rab> Greenlee combo drill/taps are less than half that price elsewhere, but they're hex shank...dunno how that performs in terms of runout, probably poorly.
[19:02:48] <mozmck> I'm milling endgrain hardwoods with them.
[19:02:52] <heathmanc1979> Or just micrograin carbide bits
[19:03:16] <_methods> can you use thread form tap?
[19:03:24] <ssi> I can use whatever I want
[19:03:25] <_methods> it's not food grade or medical is it?
[19:03:27] <_methods> ok
[19:03:28] <ssi> no
[19:03:33] <_methods> i'd go with thread form then
[19:03:37] <_methods> they last way longer
[19:03:40] <ssi> it doesn't really even neeeeed to be stainless
[19:03:46] <ssi> it just needs to not rust unfinished
[19:04:14] <Rab> Form taps are the bees knees.
[19:04:18] <_methods> yeah
[19:04:19] <XXCoder> interesting
http://www.aliexpress.com/item/T2139-C8-4R-110-Insertable-Ball-Precision-End-Mill-For-P3200-D08-Carbide-Insert-Working-On/1928167985.html
[19:04:40] <ssi> I've never used a form tap
[19:04:41] <Rab> Never seen a combo drill/form tap, though.
[19:04:41] <MrSunshine> hmm does straight edge bits work good for plastics ?
[19:04:43] <_methods> that's a lot of holes
[19:04:52] <ssi> well it's two holes per part
[19:04:53] <MrSunshine> i have like 0 experience with plastics
[19:04:54] <ssi> times 500 parts
[19:04:56] <XXCoder> stright flute?
[19:05:01] <_methods> thread forms are great
[19:05:02] <heathmanc1979> For edging plastics yes
[19:05:16] <_methods> unless you're doing medical or food grade lol
[19:05:18] <heathmanc1979> Spiral upcut works great in acrylics
[19:05:20] <ssi> why's that
[19:05:31] <_methods> they leave micro channels in the metal
[19:05:42] <_methods> that could get bacteria trapped in there
[19:05:45] <ssi> I see
[19:05:48] <_methods> or food particles
[19:06:00] <XXCoder> even if riciously large rpm or low ipm
[19:06:03] <ssi> tell me this
[19:06:15] <ssi> if I drill and tap thru on a turned part that has a center bore
[19:06:21] <ssi> how's the burr performance
[19:06:34] <ssi> I'm concerned about having to clean up a burr in the bore
[19:06:35] <ssi> the bore is .100"
[19:06:41] <_methods> on the far side?
[19:06:45] <ssi> in the bore
[19:06:53] <ssi> not the screw hole
[19:06:57] <ssi> the screw hole is perpendicular to the bore
[19:07:01] <ssi> it's a setscrew
[19:07:03] <_methods> can you put a csink in there?
[19:07:09] <_methods> ahhh
[19:07:13] <_methods> yeah that sux
[19:07:24] <heathmanc1979> There will be a burr.. Lol
[19:07:27] <_methods> no real easy way to do that
[19:07:29] <ssi> I may be able to ream the bore after the setscre
[19:07:33] <_methods> yeah
[19:07:36] <ssi> there's three ops
[19:07:36] <Rab> ssi, form taps work by rolling the threads, and I have noticed some deformation on entry and exit.
[19:07:39] <_methods> or ball hone
[19:07:50] <ssi> turn two sides, drill and tap setscrews
[19:08:02] <_methods> thats too small for a ball hone though i guess lol
[19:08:05] <Rab> I countersink holes before tapping so the burr/deformation stays below the surface.
[19:08:05] <_methods> ream it
[19:08:23] <ssi> I can turn one side and drill .095, part, drill and tap for setscrews, then turn the other side and drill for the other bore, then ream both diameters
[19:08:30] <ssi> it has a .100" bore on one side and a .125 bore on teh other
[19:08:43] <ssi> I have a cnc lathe but no cnc mill
[19:08:43] <XXCoder> 10 ball mills for 69 bucks not bad. thats roughly 7 dollars eacg
[19:08:43] <Rab> But FWIW I notice a burr with cutting taps too.
[19:08:47] <XXCoder> D6
[19:09:01] <_methods> you got a print of the part?
[19:09:11] <ssi> I have a napkin drawing, lemme do a real one real quick
[19:09:14] <ssi> it's dirt simple
[19:09:18] <_methods> kk
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[19:13:24] <Jymmm> ssi: Dirt isn't simple though. you have various organic and mineral compounds that can be quite complex in structure. Did you mean hydrogen simple? Cause hydrogen only has a single proton and a single electron, can't get much simpler than that.
[19:13:44] <ssi> thanks Jymmm :)
[19:13:49] <XXCoder> yeah dirt is amazing complex
[19:13:52] <Jymmm> np
[19:14:42] <XXCoder> https://www.youtube.com/watch?v=mKTcH6TtppA hmmm
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[19:17:15] <Jymmm> Has anyone seen something like this in a chip by chance?
http://www.ezsbc.com/index.php/products/ls1.html#.VRFLPWaDqPU
[19:17:28] <Rab> XXCoder, I call foul, I was expecting the stirling motor to provide motive power for the CNC.
[19:17:34] <XXCoder> lol
[19:17:41] <Jymmm> Yeah, i was too.
[19:17:44] <XXCoder> Rab: theres sun powered sand cnc
[19:18:09] <_methods> you want a ttl chip?
[19:18:19] <XXCoder> getting link a sec
[19:18:36] <XXCoder> link is extra slow for some reason
[19:18:44] <Jymmm> _methods: No, a 3.3/5V to/from 12V
[19:18:45] <Rab> XXCoder, that's some next-level repcrap. I don't know why all the plastic-poopers aren't rushing to reproduce that guy's work.
[19:19:10] <XXCoder> make addive-subtractive sand cnc. I dare you
[19:19:33] <XXCoder> http://microfabricator.com/articles/view/id/5331b01d9aad9d221100000b/sand-babel-solar-powered-3d-printed-skyscraper-made-with-desert-sands
[19:19:39] <Jymmm> XXCoder: can exlosives be nvolved?
[19:19:44] <Rab> Jymmm, 74xxx245?
[19:19:50] <XXCoder> why not? lol
[19:19:54] <Rab> Ohh, 12V
[19:20:03] <Rab> There are HV level shifters.
[19:20:34] <Jymmm> Rab: I/O ?
[19:20:43] <Jymmm> bi-directional?
[19:20:59] <Rab> Jymmm, I think so. Looking for supporting link.
[19:21:07] <Jymmm> k
[19:22:34] <_methods> only think i can think of is like a max2232
[19:22:46] <_methods> rs232 levels are 15v right?
[19:23:02] <Jymmm> _methods: Yeah, and I don't think they come in a 8ch version
[19:23:13] <_methods> or is it 25v
[19:23:31] <heathmanc1979> Or 5
[19:24:05] <_methods> max open circuit is 25v on rs232
[19:24:10] <Jymmm> The standard specifies a maximum open-circuit voltage of 25 volts: signal levels of ±5 V, ±10 V, ±12 V, and ±15 V are all commonly seen depending on the voltages available to the line driver circuit.
[19:24:19] <_methods> i always forget
[19:24:40] <XXCoder> I hate projects that source parts that's unlikely for me to find same parts.
[19:25:20] <Jymmm> Does anyone know what that black compoantes on the LS1 are? Says 12W then 60
[19:26:33] <_methods> racist
[19:26:56] <Rab> Jymmm, there are MAX232 siblings with a ton of channels; see MAX244-249.
[19:26:57] <Jymmm> _methods: don't make me slap the martian out of ya!
[19:27:20] <Rab> But obviously that's not bidirectional on the same signal lines(s).
[19:27:34] <ssi> _methods:
http://www.prototechnical.com/~imcmahon/Adapter.PDF
[19:27:49] <_methods> ah cool
[19:28:14] <_methods> can you cross drill and tap before you bore?
[19:28:21] <ssi> sure
[19:28:34] <ssi> what I was thinking was do the right side turning operation, drill the .100 bore undersize
[19:28:35] <_methods> that would just push the burr into the tapped holes
[19:28:38] <ssi> then do the drill/tap op
[19:28:56] <ssi> then do the left side turning op, drill the .125 bore undersize, thru ream .100, then ream to depth .125
[19:29:15] <_methods> yeah
[19:29:24] <_methods> that ssounds like a good series
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[19:29:53] <Rab> One-way 20V level shifting:
http://www.ti.com/product/cd40109b
[19:29:56] <ssi> the first turning op can be done with ghetto bar pulling, and should require minimum intervention
[19:30:03] <ssi> second op will need to be done in a collet stop
[19:30:07] <_methods> yeah
[19:30:52] <_methods> how many are you doing?
[19:30:58] <_methods> 500?
[19:31:07] <XXCoder> http://www.stirlingsouth.com/Roy/others/sondagh/sondagh.htm "new 1999" umm yeah it's 16 yr old lol
[19:31:08] <ssi> at least
[19:31:13] <ssi> 500 is the initial ask
[19:31:25] <ssi> they were originally saying 1000 but I think they don't want that many, but most shops won't touch anything smaller
[19:31:26] <_methods> man that's a nice screw machine job
[19:31:43] <ssi> it's a nice HNC job but for the cross holes!
[19:32:03] <_methods> live tooling on screw machine will smoke those out
[19:32:06] <Jymmm> Rab: I'm wanting to interface an arduino with automotive (13.8VDC), so being able to be powered by 12V and even cheating by using one of the buffer channels to get 5V to power the arduino would be nice and less component count.
[19:32:07] <ssi> yeah I know
[19:32:19] <ssi> and a back spindle for the finish face
[19:32:29] <ssi> someone buy me a screw machine! :D
[19:32:30] <_methods> you wouldn't even have to
[19:32:38] <_methods> you could part off and be done
[19:32:38] <ssi> yeah I suppose not
[19:32:43] <XXCoder> damn
[19:32:47] <XXCoder> this is nicely done
http://www.stirlingsouth.com/Roy/others/j_horne/john_horne.htm
[19:32:49] <ssi> but in my experience you'd get a parting burr
[19:32:50] <Jymmm> ssi: But your own damn hooker wife!
[19:32:56] <Jymmm> buy*
[19:33:02] <_methods> you just put the chamfer on
[19:33:13] <_methods> and there won't be a tit because of the .1 bore
[19:33:15] <ssi> burr on the bore ID
[19:33:21] <_methods> yeah there will be that
[19:33:22] <ssi> when I part tubing I get a nasty burr
[19:33:33] <Rab> Jymmm, haha @ cheat...I don't think that will work. Level shifters usually require external VCCA.
[19:33:35] <_methods> but with a right hand parting tool
[19:33:45] <_methods> you could cut that considerably
[19:33:52] <ssi> ah yeah
[19:33:59] <ssi> never considered the handedness of my parting tool: )
[19:34:07] <_methods> the majority of the burr would end up on the stock
[19:34:09] <Jymmm> Rab: Well, if it was a 12V level shift I meant.
[19:34:23] <Jymmm> Rab: The Max232 are 5v
[19:34:24] <ssi> _methods: you wanna take a trip down and help me set up the hnc? :D
[19:34:29] <_methods> hehe sure
[19:34:32] <ssi> I could come fetch you :P
[19:34:34] <XXCoder> aww
https://secure.villagepress.com/store/items/detail/item/824
[19:34:38] <XXCoder> expensive!
[19:35:31] <_methods> heh you got wings
[19:35:48] <Jymmm> Rab: I like that lil pcb but at $5 a bit expensive for what it is.
[19:36:25] <ssi> I need to get it going soon
[19:36:33] <ssi> I hope to god I got taht turret seal installed before the fire
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[19:36:37] <ssi> I can't remember if I did or not
[19:36:40] <ssi> but I'm afraid the answer is not
[19:37:10] <Rab> Jymmm, it would cost more to fab yourself.
[19:37:56] <Rab> They don't mention which discrete level shifter they use, do they?
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[19:38:48] <Jymmm> Rab: they don't even offer a datasheet...
http://www.ezsbc.com/index.php/products/ls1.html#.VRG9NmaDqPV
[19:39:02] <Rab> Could just be a clamping diode.
[19:39:06] <_methods> looks like it says 12w90
[19:39:11] <_methods> or 12w60 on there
[19:39:36] <Rab> 12W would likely be the code, but I can't find anything for it.
[19:39:46] <Jymmm> neither could I
[19:40:22] <Rab> Jymmm, so you could use discrete channels for each direction, correct? It doesn't have to be bidirectional on each signal line?
[19:40:55] <Jymmm> Rab: Bi-directonal is not necessary
[19:41:26] <_methods> i'm assuming they just copied this and made it 8 channels
[19:41:28] <_methods> https://www.sparkfun.com/products/12009
[19:41:41] <_methods> bss138
[19:42:07] <Jymmm> _methods: that's not 12V is it?
[19:42:21] <_methods> hmm
[19:42:29] <_methods> 5v
[19:42:30] <_methods> sorry
[19:42:52] <Jymmm> even so, that wouldn't be bi-drirectional would it?
[19:43:03] <Jymmm> the BS138 I mean
[19:43:17] <Rab> Jymmm, CD40109B might be a winner then.
[19:43:27] <Rab> (Would need 2x for 8 channels)
[19:45:29] <Rab> Wow @ ghetto mystery markings on the Sparkfun parts:
https://cdn.sparkfun.com//assets/parts/8/5/2/2/12009-07.jpg
[19:45:46] <_methods> max3378?
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[19:46:39] <Rab> _methods, only good to 5.5V.
[19:46:39] <Jymmm> _methods: Twelve Volt =)
[19:46:42] <_methods> damn
[19:46:45] <_methods> jus saw that
[19:46:51] <Jymmm> _methods: nice try though =)
[19:46:57] <_methods> that the 15v
[19:47:02] <_methods> and jumped the gun lol
[19:47:42] <Rab> +/-15kV, that would be a mighty level shifter.
[19:47:49] <_methods> yeah lol
[19:48:06] <Jymmm> Rab: 3 to 20V looks like potential; and might be able to get away with 4 (quad) instead of 8 I/O
[19:49:32] <Jymmm> 56¢
http://www.digikey.com/product-detail/en/CD40109BE/296-3505-5-ND/376604 and in DIP
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[19:50:06] <Jymmm> which means I can fry a few and not worry about it too much =)
[19:50:59] <_methods> mc14504b?
[19:53:11] <_methods> 6 channels on that
[19:53:52] <Rab> There's even an automotive-qualified version, CD40109B-Q1, although I'm not sure it's significantly different from the standard part.
[19:55:33] <Jymmm> Yeah, just need to drive a relay and get input from car
[19:56:23] <Rab> CD4504B is TI's version, rated for 20V instead of 18V for the OnSemi part...does look like a valid option.
[19:56:54] <_methods> be nice if they had a version with 8 channels for him
[19:57:03] <Jymmm> or DIP
[19:57:19] <_methods> you already have the dip part covered lol
[19:57:21] <PetefromTn_> afternoon folks
[19:57:30] <_methods> ermahgerd it's pete
[19:57:40] <PetefromTn_> indeed
[19:57:42] <ssi> lul
[19:57:48] <_methods> where you been
[19:57:58] <PetefromTn_> F L O R I D A !!!!!!!!!
[19:58:01] <Rab> Jymmm, why not just use optocouplers?
[19:58:08] <_methods> hehe
[19:58:08] <ssi> DRIVING to florida
[19:58:09] <_methods> nice
[19:58:09] <ssi> hahahahaha
[19:58:31] <PetefromTn_> yup drove there and back in a 2015 rented Dodge Dart GT four door
[19:58:40] <Jymmm> Rab: would they drive a relay and come in quad/oct?
[19:58:45] <Rab> Auto electrical is horrible for noise, transients, etc...I would want more isolation than simple level shifting.
[19:58:51] <PetefromTn_> oh and just for the record. Florida is even better than I remembered it!!
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[19:59:02] <ssi> yea give it two months
[19:59:08] <ssi> it'll be back to its regular unbearable self ;)
[19:59:11] <PetefromTn_> give what two months
[19:59:14] <ssi> florida
[19:59:29] <PetefromTn_> sorry not happenin'
[19:59:37] <Rab> Jymmm, shrug, I don't know if level shifters will drive a relay.
[19:59:38] <ssi> what's not happening?
[19:59:42] <ssi> the heat, or the humidity?
[19:59:43] <PetefromTn_> I forgot how awesome the fishing and beach is..
[19:59:46] <ssi> cause I assure you, both are happenin'
[19:59:49] <ssi> SOON
[19:59:56] <Jymmm> Rab: No, I mean optos
[20:00:04] <Rab> I'm sure there are optocouplers with darlington output.s
[20:00:09] <PetefromTn_> shit man it gets just about as hot here as it does there really..
[20:00:18] <ssi> yeah, just not as often :)
[20:00:29] <Jymmm> http://www.avagotech.com/pages/en/optocouplers_plastic/plastic_digital_optocoupler/100_kbd_darlington_transistor_output_optocoupler/
[20:00:45] <PetefromTn_> no pretty much all summer here is pretty humid and you don't get the nice ocean breezes to fix it..
[20:00:49] <Rab> They do come in 2- and 4-channel packages, but there's no reason not to use individual parts IMO. Singles are usually cheaper per-channel, too.
[20:00:59] <PetefromTn_> but that is my problem right ;)
[20:01:55] <PetefromTn_> I can honestly say that we are redoubling our efforts to sell this house now heh I gotta move back there if not just for all the great watersports, seafood, and beautiful beaches but for family and friends...
[20:02:11] <ssi> do it
[20:02:17] <PetefromTn_> Doin it
[20:02:53] <_methods> heh must be horrible livin away from the ocean
[20:02:57] <PetefromTn_> What was really surprising is how beautiful and grown up the place we live in was it really is nicer now in a lot of ways...
[20:03:21] <_methods> the furthest i ever lived from teh ocean was Ft. Bragg lol
[20:03:45] <Rab> Optos are definitely more expensive than level shifters, per-channel.
[20:04:02] <Rab> Jymmm, is this for a product, or a personal project?
[20:04:18] <Jymmm> Rab: lil colmn A, lil column B
[20:05:54] <Rab> I see how you are...for commercial product I would want some isolation. More expense, but less support after the sale.
[20:06:13] <PetefromTn_> In fact I am even considering selling off my machines and stuff to help us get there now... my wife was loving it down there.
[20:06:15] <Jymmm> =)
[20:07:59] <Jymmm> Rab: It would be nice to be able to digital interface/control automotive stuff in a straight forward fashion is all
[20:08:29] <PetefromTn_> Right now I am trying to find a local tile guy who is worth a damn and will finish the tile in our house for a reasonable price. Gotta get this shit done!!
[20:08:32] <Rab> http://www.dx.com/p/8-channel-5v-solid-state-relay-module-board-red-blue-121337
[20:08:35] <Rab> Cheap!
[20:09:24] <Jymmm> Rab: True (and they have a 4 relay version), but I wanted dorect control of 30A relays
[20:09:51] <Jymmm> direct*
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[20:13:04] <Rab> None of those level shifters are suitable for driving relays, including the original board. They're just meant for logic level translation.
[20:13:37] <Rab> You would still need some kind of switching circuit.
[20:13:43] <Jymmm> ULN2803 are grat for controlling relays directly
[20:14:12] <Jymmm> I just wanted something I/O instead of just O =)
[20:14:38] <Jymmm> ULN2803 are the cheap DX stepper motor drive modules btw
[20:14:45] <Jymmm> DX.COM
[20:14:59] <Rab> That's a very reasonable option.
[20:15:20] <Rab> What are the inputs like? Switches, or sensors, or?
[20:15:33] <XXCoder> pretty cool
http://www.logicsys.com.tw/images/Rpm60.jpg lol
[20:15:46] <MrSunshine> damn this clamp is sick!
[20:15:59] <MrSunshine> now i understand what you mean by it developing alot of force .. fast
[20:16:00] <XXCoder> hurry, get meds for clamp!
[20:16:01] <Jymmm> Rab: thos and tappig into existing circuits "is a light on?" etc
[20:16:30] <Rab> Jymmm, I definitely advise some form of isolation.
[20:17:01] <Jymmm> Rab: One example
http://www.dx.com/p/uln2803-stepper-motor-driver-module-for-arduino-red-156795
[20:17:15] <Jymmm> Rab: I would too, not sure if I'm gonna get it though =)
[20:17:28] <_methods> yeah you can crush stuff with those clamps if you're not careful
[20:17:30] <Jymmm> Rab: availability, not desire that is
[20:17:50] <MrSunshine> _methods: hell i didnt even put any force on the screw driver and the pieces i clamped was stuck ... real hard =)
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[20:18:50] <_methods> yeah my machining the clamp to the form of the part you get a lot of surface area to clamp on
[20:18:50] <Jymmm> Rab:
http://www.dx.com/p/lson-5-line-4-phase-stepper-motor-driver-board-blue-308839
[20:18:55] <_methods> s/my/by
[20:19:29] <MrSunshine> http://postimg.org/image/lz4qxzfe3/ =)
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[20:19:47] <MrSunshine> i call it the woodee uniforce clamp!
[20:19:53] <_methods> heheh
[20:20:02] <MrSunshine> those two blocks are in there rock solid
[20:20:22] <MrSunshine> with a bit of friction material (some sand paper) so it cant twist those arent going anywhere =)
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[20:21:02] <Rab> Jymmm, looks reasonable.
[20:21:28] <Rab> If you trust greatest quality chinese "ULN2003".
[20:21:50] <XXCoder> MrSunshine: looks like it wont move anytime soon
[20:22:04] <Jymmm> Rab: Eh, it's socketed =)
[20:22:04] <Rab> Cheapest DIP opto on Digi-Key, $.265/channel qty/10:
http://www.digikey.com/product-detail/en/LTV-817/160-1366-5-ND/385836
[20:24:26] <MrSunshine> some parafin wax on the sides and it goes real smooth =)
[20:24:31] <MrSunshine> well this is a winner
[20:24:38] <MrSunshine> gonna mass produce and make jigs for everything!
[20:25:01] <Rab> MrSunshine, did you make that clamp just now?
[20:25:06] <MrSunshine> Rab: yeah
[20:26:09] <Rab> Good work, you should release your filez into the wild so cheap clones can proliferate.
[20:26:20] <_methods> mitee bite puts them all online
[20:26:28] <_methods> you can download models for all their clamps
[20:26:45] <_methods> people need them to model their fixtures
[20:27:08] <_methods> pretty much all fixturing companies give out their models freely
[20:27:21] <_methods> they want you to use their solid models so you'll order their clamps
[20:27:23] <Rab> Registered Users, Sign in Here:
[20:27:42] <_methods> mailinator.com............
[20:27:46] <_methods> register at will
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[20:30:01] <MrSunshine> these clamps could be supersized to clamp down the wife also
[20:30:09] <MrSunshine> ehmn ... i mean some wood
[20:30:13] <MrSunshine> stuff
[20:30:22] <Rab> Wooden fertility idol?
[20:31:45] <XXCoder> clamps for wood sure :P
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[20:49:32] <XXCoder> lol
https://i.imgur.com/TiPnrFn.jpg
[20:49:43] <XXCoder> its apparently first roll
[20:50:55] <XXCoder> https://sslimgs.xkcd.com/comics/sex_dice.png
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[21:31:44] <Nick001-shop> <PCW> Around?
[21:32:04] <MacGalempsy> hey everyone
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[21:43:27] <PCW> Sort of but busy...
[21:46:00] <Tom_itx> that's a good thing
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[21:46:24] <Nick001-shop> phone would be faster-
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[21:52:42] <ZeekHuge> linuxcnc supports beaglebone ? right ?
[21:53:38] <ZeekHuge> and uses the PRUs too ( ?? )
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[22:00:14] <_methods> try machinekit
[22:00:45] <ZeekHuge> so whats actually machinekit ?
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[22:00:56] <Rab> ZeekHuge, Machinekit is a port of LinuxCNC to BBB.
[22:00:57] <_methods> an undocumented buggy fork of linuxcnc
[22:01:40] <_methods> if you need help with it you can join their google group or something
[22:02:08] <furrywolf> lol
[22:02:33] <ZeekHuge> OK, so MachineKit can control the PRUs to run the motors ??
[22:02:35] <Rab> ZeekHuge, some fundamental portions of LinuxCNC had to be rewritten to use the BBB PRUs, so e.g. the configuration file is somewhat different.
[22:02:44] <Rab> ZeekHuge, that is correct.
[22:03:03] <MrSunshine> so any tips on materials to use to cut clamps from ? i was thinking phenilic or whatever its called but seems hard to get and very expensive ... or something like nylon but nylon is slippery...
[22:03:51] <Rab> ZeekHuge,
http://blog.machinekit.io/
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[22:05:09] <ZeekHuge> Is the control and command giving to the PRUs ? is that at real time (i read somwhere that it is not ) ?
[22:05:28] <Rab> ZeekHuge, can you clarify?
[22:06:17] <ZeekHuge> http://elinux.org/BeagleBoard/GSoC/Ideas#PRUSS_Support_for_the_newer_kernels
[22:06:42] <ZeekHuge> this is the link to beagleboard.org's GSoC ideas page
[22:07:03] <ZeekHuge> and there is a project called "Using BeagleBone PRUs to control CNC and 3D printer stepper motor Drivers"
[22:07:25] <ZeekHuge> it says that the controlling is not at the real time.
[22:07:54] <Rab> ZeekHuge, I don't know anything about that project. The Machinekit port uses the PRUs for real-time step generation.
[22:09:03] <ZeekHuge> OK . Thank You
[22:09:18] <_methods> just get an old computer and use that
[22:09:35] <_methods> you get to save something from the landfill and you'll be able to get help
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[22:20:02] <jdh> I put a computer in the trash the other day. they pulled it out and left it by the empty can
[22:21:55] <_methods> hah
[22:22:00] <_methods> e-waste
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[22:32:26] <Deejay> gn8
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