I needed a drill bit holder. The ones I could find had all sorts of flanges or hooks etc which i did not like.

So I drew up my own in fusion 360 from ideas got from others I saw.

I specifically wanted no supports and I wanted it to be printed with holes opening upward.

The holes are all 0.4mm larger than drill bits so no resizing is needed during slicing.

Update 23 June 2021
v2.stl

I added a 4.2mm bit.

Had to create a bunch of 4.2mm holes for m5 tapping.