Reply To: 3d printed
Part of the design is the CAD program that is used, some will work with measurements as small as .000001in. The other part is the 3D printer. One free CAD program that I have looked into and tried would take measurements as smallI as 0.0001in or about .0003mm. I have seen some sub $4k printers that print at a resolution (the thickness of the plastic being fed out of the extruder) of about 100 microns or about 0.1mm or about 0.004in, some higher end models go down to under 20 microns or 0.02mm or 0.0008in.
I have been looking at the sub $4k models to start with and try to work up from there. It is just a matter of finding the best of both, program and printer.