Hello Luke,
On 2017-03-20 at 02:04, Luke Kenneth Casson Leighton wrote :
the new USB connector is 6mm high
the VGA connector and PJ-045 (DC jack) i believe are both 9mm
the micro-sd card slot (on the bottom, other end) is 2mm
the EOMA68 (PCMCIA) is 6mm.
Could you confirm that your microdesktop_prog2.scad file (used to generated microdesktop_model2.stl) is _not_ up-to-date with these dimensions? Taking measurements from Mark's FreeCAD file converted from your stl:
- USB connectors are 6.65mm high rather than 6 - PJ-045 (thin tall one at rear extreme left?) is 11mm high rather than 9 - VGA is 9mm - microSD slot (at the front under the board I presume) is 1.8mm rather than 2
Mark, I imported the scad file directly into FreeCAD, import wasn't perfect but I fixed the issues, all shapes are separate primitive cubes that can be re-sized through their properties. I left the EOMA-68 card separate as a mesh to bring the file size down to <160KB.
https://drive.google.com/file/d/0B8EXnjMkh8zVNXFvRjA5Qm0tSlU/view?usp=sharin... (apologies for the Google hosting...)
Edit --> Project info reports license as GPLv3 (it's saved into the document).
On the manufacturing side, I wonder if it may be a good idea to check the real thickness of the 3mm plywood boards. Due to manufacturing tolerances, materials provided in sheets are often thinner than their nominal thickness be it for plywood, plastics etc.
As for the screws, difficult to evaluate from a couple of pictures but they seem to be M3 socket head, black oxide, with hex nuts at the bottom (possibly 2 per screw) with some kind of either plastic or vinyl cap. Nickel plated screws would be better IMHO (considering the hex nuts are either nickel or zinc) and not prone to rust like black oxyde screws, but they might be difficult to source and more expensive.
Cheers,
Normand