probably this has been asked/discussed before. I’m trying to figure out what the best approach would be to make plates (~2mm) with holes for countersunk head screws.
I know I can 3D print, but meh, it’s not very precise and nice. Or perhaps there are some brass melt-ins for this?
I can laser-cut (10W laser) black acrylic, also punch a straight hole. But are there tricks to make the funnel like shape? Multiple passes with different power? My next best idea is to laser-cut the straight hole, and then manually use an electrical drill with a countersink bit.
Or would you entrust the cnc-drill to do the job (probably using wood as material)?
Something like ten plates à two screw holes. I could fit them all on one bed (each plate being 133.4mm × 38.1mm ; screws are M3 I believe). They are blank panels for an API 500 rack.
I’m not great at modeling, but TinkerCad works well for me for doing this. Create your plate, then add a negative cylinder and cone. Once you have the hole the way you want it, group those two objects together, and copy-paste for as many holes as you need. Group everything together and export the STL.
The countersink won’t be smooth, but none of my hand drilled counter sink holes are either
