[Arm-netbook] microdesktop casework as DXF files for laser-cutting

[Normand Chamberland]

2017-03-30 6:21 GMT-04:00 Luke Kenneth Casson Leighton <lkcl at lkcl.net>:

>  * the PCB will fall out of the casework (both ways, forwards and
> backwards).
>

Actually it won't. :-) It cannot slide frontward due to upper layers
stopping the DC/VGA ports. As for backwards it's more of an issue, only the
right back corner of the EOMA card receptacle (have no idea how it's
called) will be stopped by a width of 3mm.



>  * it will also lift upwards by about... 1mm, rattling around.
>

Yes that bugs me too.


>  * the middle layers also need to be split into separate halves.
>

Yes, that's what I did... Not happy with it either as it increases the
number of parts. I went with a case depth approx. equal to the PCB because
the Crowd Supply page mentions the microdesktop casing to be 4.5 x 4.5
inches (114mm). But if we can make it deeper and have the separate halves
connect, it would be much better.


> right now, the components are in the way.
>  * the layer below the PCB (with a cutout for the micro-sd card) will
> be in direct contact with the PCB, preventing heat dissipation
>


I naively thought that being a low powered CPU, it would not be needed. I
did mention I know nothing about electronics. :-P


>  * also you notice the cut-away in the corner of the PCB underneath
> the eject button for the PCMCIA holder? the idea there is to put a
> small recess (which we have to think how not to interfere with the
> aesthetics) that will make it easier to eject.
>

Was wondering about that cut-away. The eject button isn't modelled in the
microdesktop_model2.stl file.

I need to go, I have an idea about holding the PCB but I need to think more
about it...

Cheers

Normand
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