Hole test for M3

A QUICK TEST get the optimum hole size for you're OPEN-SCAD designs,

there are a series of holes, in increacing sizees,

For M3 Clearence,
M3 Nut,
M3 Pan-head,
And M3 Tap - the 7 side hole, which I hope will allow the tap to start a bit easier.

Enjoy

Ceri