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> haha, so, remember my faulty CNC thing?
<whitequark> someone else also bought it without all the autotransformer fuss, and it blew in almost exactly same way
<whitequark> fet instead of 555 died
<whitequark> so it's not me, it's the chinese
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<DocScrutinizer05> sure, what else :)
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<wpwrak> whitequark: you could start a CNC preemptive repair service :) team up with an importer and reseller, then fix the critters before selling them
<whitequark> mmm
<whitequark> i'm not sure it's worth the hassle
<wpwrak> you mean that most of the critters don't fail ? or that people wouldn't pay for a - probably still comparably cheap - device that doesn't go up in flames ?
<whitequark> i mean it's a lot of work
<whitequark> logistics, agreements with suppliers, marketing...
<wpwrak> maybe look if there's any large reseller in .eu, then contact them to see if they think that's a problem they'd like to have solved
<whitequark> I think there aren't any resellers, they just ship directly from China
<whitequark> why let someone else take a cut if you can sell it directly on ebay?
<whitequark> hm, there are some resellers, it seems
<whitequark> holy fuck
<whitequark> a russian reseller sells it for over 5x the price i bought it at
<wpwrak> does that smell like opportunity ? :)
<whitequark> hmm
<whitequark> well, it does
<whitequark> toolmaking is a pretty high-margin field in general
<wpwrak> take cheap but dodgy china stuff, add indestructible russian engineering, own the world :)
<whitequark> they're enormous though, with OD=0.9
<whitequark> http://www.ebay.com/itm/271138757893 these are with OD=0.6
<whitequark> pretty interesting actually
<whitequark> it's exactly same company
<whitequark> they even link from ebay footer
<wpwrak> yup. that's what's funny about it, isn't it ? :)
<whitequark> I guess
<wpwrak> well, that's the first 6% discount. for the remaining 89% you have to find their chinese fab ;-)
<whitequark> 100pcs for $4.5
<wpwrak> alas, only a single length. so it's not so nice for 0.8 mm boards
<wpwrak> now we're talking :)
<whitequark> wow, 1000 for $10
<whitequark> these things really aren't expensive to produce, are they
<whitequark> it's basically packaging cost
<wpwrak> and margin :)
<whitequark> you'd need a microscope to see that margin
<wpwrak> not if you sell at 10 cents per unit :)
<whitequark> hehe
<wpwrak> hmm, aliexpress doesn't seem to have stuff < 0.9 mm, which probably is the shaft diameter
<whitequark> yeah, it's ID
<wpwrak> hmm, or just use nails: http://www.mill-max.com/assets/pdfs/204.pdf
<wpwrak> of course, mill-max are triple-plus $$$
<whitequark> huuuh
<whitequark> do you solder these, or smash?
<wpwrak> i'd solder them. but feel free to smash ;-)
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<mooseboobs> Anyone know where I could find an example pcb layout for a smartphone (preferably with a MTK chipset) ?
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<DocScrutinizer05> smashing rivets into PCB is a nasty thing and tends to not yield good results
<DocScrutinizer05> may sound weird but the FR4/whatever is too brittle and neither elastic nor strong enough
<DocScrutinizer05> and you generally damage copper plating in 75% of cases
<DocScrutinizer05> you'll end up with rivets that are loose and don't have contact despite looking perfect
<DocScrutinizer05> depending on your tools to smash the rivets, you even may deform the PCB so it is a 1.2mm at and around the rivet when it originally been 0.8mm
<DocScrutinizer05> some methods to smash rivets make the rivet create enormous forces radially to rivet's cylinder
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<wpwrak> so, better to use nails, and no hammer
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<apelete> Hi larsc
<apelete> are you there ?
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<whitequark> DocScrutinizer05: I see
<whitequark> rivets did look fishy to me, there should have been a reason almost no one ever uses those
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