linfredriksson shares:

Metric Drill Guide

One side of the drill guide is flat for drilling on flat surfaces and one side is v shaped for drilling in corners or on round surfaces such as small pipes or dowels.

The drill guide have eight holes for drill bits from 3mm to 10mm in diameter.
Plenty of room on the sides to write the hole sizes using a felt pen for easy identification.
There is two versions of the drill guide, one that is 20mm tall and one that is 30mm tall.

Supported drill bit sizes: 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm.

download the files on: https://www.thingiverse.com/thing:4608523

Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!

Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!