LEE Low Primer Warning & Unstuck Device
When you suffer from stuck primers in your LEE primer tray build this!
Advanced version of my previous model. Please have a look to https://www.thingiverse.com/thing:6414834 to see details i.e. for the other parts of this model. You will need the parts of both design to build your own functioning variant.
Add a little piece of rubber or plastic for better clamping force on top of the screw.
See the device in action: https://youtu.be/6ruY3w_vUVQ