Mounts in a router that accepts 1/4" bits. Accepts a fine tip or regular Sharpie pen.
Hardware needed:
1- 1/4" x 2" bolt. 2.5" bolt
...Zeig mehr would also work fine.
1- weak spring to go on 1/4" bolt and sit between the collet and the pen holder
2- M3 bolts at least 10mm long, ideal would be 15mm long.
https://www.youtube.com/watch?v=TP7WzB-HEK4
