This is a very simple tool to help you drill a hole square/perpendicular to a surface.

It really doesn't get any simpler than this, an angle with a v-groove on 2 sides.

No need to press it hard against your drill, just press it to your work pieces and bring it as close as you can to your drill bit. It will give you a very good indication of your perpendicularity and being 3D printed in will last longer than a circular guide that generates a lot of friction and wears down your guide.

Super quick print and takes no room in a tool box/tool bag.

different sizes for different size drilling jobs.

Enjoy!

And If you have a minute, check out my other models!