Here's a project I've been working on. It's a CNC wire cutter that attaches to a pug mill ceramic mixer/extruder.
The Pug Mill extrusion rate is not as consistent as I hoped, and I need to find a way to meter the rate of extrusion so I can adjust the wire speed on the fly. I was thinking of using an optical mouse type sensor. Any suggestions for components that would be relatively easy to integrate?