[Arm-netbook] EOMA68 Computing Devices Update: 500 Micro Desktop PCB Assemblies
richard.wilbur at gmail.com
Wed Mar 27 11:15:46 GMT 2019
> On Mar 27, 2019, at 06:21, Luke Kenneth Casson Leighton <lkcl at lkcl.net> wrote:
>> On Tue, Mar 26, 2019 at 11:52 PM David Niklas <doark at mail.com> wrote:
>> On Sat, 23 Mar 2019 16:56:25 +0000
>> Luke Kenneth Casson Leighton <lkcl at lkcl.net> wrote:
>>> not a snowball in hell's chance. resin is too brittle, 3D printing
>>> is far too inaccurate, and the plastic is extremely thin. 5 years ago
>>> the ones we had stamped out for prototypes (laser-cutting i believe)
>>> broke almost immediately.
>> What material did you laser cut? I would have thought that laser cut
>> aluminum would be perfect.
> ten prototypes of the mass-produced PCMCIA plastic surround from
> Litkconn had holes laser-cut to make space for the micro-sd,
> micro-hdmi and USB-OTG ports.
> the result was plastic under 1mm deep that had only around 0.5mm
> height below e.g. the micro-sd card and it of course snapped
Sounds like a more flexible plastic is needed but that clearly impacts the manufacturing processes available and thus the cost.
> as a result we considered very thin metal sheet (thick foil in
> effect) that could be stamped (or laser cut) and was effectively a
> "metal sticker" that could go over the end and be bent round.
> probably even by hand.
Did you try the foil? How well did it work?
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