Router templates for inner corners - Metric

thingiverse

There are numerous router corner templates available, but they all cater to outer corners and radii. These templates, however, can be repurposed for inner corners. To achieve this, simply leave some material in the corners when making the inner cut of your project, then use a router and the template to create perfectly clean-cut inner corners. These corner templates were designed by a friend who isn't affiliated with Thingiverse and doesn't own a 3D printer. He requested that I print them for him, and he asked me to share them here so others can benefit from their usefulness as well.