Customizable Barrel Hinge Drilling Guide

Barrel hinges [like these](https://www.amazon.com/Antrader-Cylindrical-Concealed-Invisible-Furniture/dp/B07K71L7XQ/) are a great concealed hinge for use on small wood projects like keepsake or jewelry boxes. But if you've ever tried to install one, you know that precise positioning is frustratingly difficult, but critical to get right for alignment.

Customizer Note: Thingiverse recently broke the Customizer app by making the viewport too small. Until they fix it, [use the direct link instead](https://customizer.makerbot.com/things/4308558).

This customizable guide can be used to get consistent perfect alignment with a hand drill on both sides of the workpiece and its lid. Hold it securely against the outside corner of your workpiece, and use the hole as a guide for your drill bit. Just flip it over for the opposite side.

The STL I've included works well for me with a 10mm hinge and a 13/32 inch drill bit (which is 10.32mm, giving just enough wiggle room to easily insert the hi