Hackaday OC: Resin Casting Tutorial and Filament Thickness Sensors

The first one, which took an absolutely enormous amount of time, is a tutorial on resin casting. This will be part of an ongoing series I’m working on for quick prototyping using these methods. In this turtorial I duplicate some buttons to keep my favorite coat in service for another season.
The next piece is some research on filament thickness sensors, an interesting development in the 3d printing community.