DocScrutinizer05 changed the topic of #qi-hardware to: Copyleft hardware - http://qi-hardware.com | hardware hackers join here to discuss Ben NanoNote, atben / atusb 802.15.4 wireless, and other community driven hw projects | public logging at http://en.qi-hardware.com/irclogs and http://irclog.whitequark.org/qi-hardware
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<whitequark> wpwrak: DocScrutinizer05: so I machined some glass on my CNC mill
<whitequark> turns out to be very easy
<DocScrutinizer05> duh!
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<wpwrak> pictures or it's a lie ! :)
<whitequark> 4k rpm, 120 mm/min, helical milling with .2mm step
<DocScrutinizer05> WOW°
<DocScrutinizer05> you're sure that's not been a diamond mill?
<DocScrutinizer05> what type of glass is this?
<whitequark> i'm sure it IS a diamond mill, I paid $15 for it!
<DocScrutinizer05> aaah, ok
<whitequark> actually more like a diamond crown
<whitequark> can work as both mill and drill
<DocScrutinizer05> how did you dig in to the material?
<DocScrutinizer05> aaah
<whitequark> helical milling
<whitequark> I did no vertical plunge
<DocScrutinizer05> I can see how to go X,Y, but Z axis is quite a bit problematic
<DocScrutinizer05> ok
<whitequark> but I could in fact just plunge it in slowly, helical is just much easier to code
<whitequark> and also I don't need to slot in *glass* if I do helical
<whitequark> heck, deep slotting is bad enough in acrylic, much less glass
<DocScrutinizer05> yep, indeed
<DocScrutinizer05> well, the milling speed obviously approaches zero in center of milling tool
<whitequark> it has no center in fact
<whitequark> as I've said, it's like a crown. a hollow cylinder
<DocScrutinizer05> oooh!
<DocScrutinizer05> weird shit
<whitequark> it's some expensive dremel thing
<whitequark> well, not really that expensive as endmills go
<whitequark> but expensive for a typical consumer :D
<whitequark> the glass is a bathroom mirror shelf
<whitequark> they go for about forty cents each
<whitequark> and you don't even have to cut them to size
<DocScrutinizer05> I'd like to see what a CNC and rubber with abrasive tool can do for glas polishing
<whitequark> it'll work well, why not
<whitequark> although I would go for green chrome siht
<whitequark> *shit
<whitequark> with conventional abrasives like sandpaper you need to go down many sizes
<whitequark> with green chrome shit you can take like five last steps and do it in one
<DocScrutinizer05> there's such rubber dremel tool with dunnowhat abrasive embedded
<whitequark> meh
<DocScrutinizer05> never heard of chrome shit ;-)
<whitequark> hard green paste made out of CrO3 and paraffine
<DocScrutinizer05> ooh
<whitequark> it's ... very soviet
<whitequark> I'm fairly sure they don't even make it in civilized world anymore
<whitequark> but it worked way better for me at polishing acrylic than increasing sandpaper grit
<whitequark> much less hassle
<whitequark> also my coolant pump has been very handy for this, naturally
<wpwrak> neat :) and i see that the victim boards are having a busy time ;-)
<whitequark> it's a solid chunk of HDPE
<whitequark> I'm not gentle with it, after all I can always mill off a top layer
<whitequark> or just throw it out entirely
<DocScrutinizer05> ok, that rubber thing cannot do +anything* to glass
<whitequark> oh? is it softer?
<DocScrutinizer05> seems so
<DocScrutinizer05> maybe there's no abrasive embedded
<DocScrutinizer05> I always just thought there must be, since pure rubber wouldn't make too mucj sense
<whitequark> mmm
<whitequark> you can polish with like, just cloth
<DocScrutinizer05> andway the "huge" cylindrical thing didn't scratch a dent into glass during 30s at 22k
<whitequark> like for example, I reassembled my rotary vane vacuum pump
<whitequark> and the actual pumping thing was made of cast iron
<whitequark> which I cleaned in the ultrasonic cleaner, naturally filled with water
<wpwrak> oh, water ? funny. i normally use boiling nitrofluoric acid ;-)
<whitequark> oh, I forgot about this window
<whitequark> so the end of the story is that cast iron, it turns out, rusts literally as you gaze upon it
<wpwrak> hmm. so that pump wasn't intended for liquids ?
<whitequark> >vacuum pump
<wpwrak> ah :)
<wpwrak> dry vacuum ;-)
<whitequark> um, is there any other kind
<wpwrak> you'd be surprised what google will find ;-)
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<arhuaco> Hi there. Anybody has experience with RC planes? I liked the design here. https://www.youtube.com/watch?v=gNKO1RhmkMM
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<DocScrutinizer05> arhuaco: well, with a strong motor you can make your TV sofa fly
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<DocScrutinizer05> think of this thing as a helicopter in unusual flight position
<DocScrutinizer05> it's not actually what you'd call a airplane
<arhuaco> DocScrutinizer05: :-)
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<arhuaco> DocScrutinizer05: It doesn't seem that bad :-P
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<kristianpaul> i blame usb hubs that dont let powercycle by /sys..
<kristianpaul> :(
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