I thought the original thing was cool... But I wanted to make it with a mount for my X Carve.
I also added a bit of a divot so I could use a smaller pen. My
...さらに表示 prototype had to be mounted backwards to attach to the X-Carve, but the file here should be fixed.
It needs all the same hardware as the original thing (www.thingiverse.com/thing:2625750), plus two screws to affix the mount to the router mount. Set screws to hold the 1/4" bolt might look better.
"This uses 1/4" 4" screw from home depot that has only small thread length at the end - just cut out the thread and you have a perfect 1/4" shaft of 3 1/4 length for this project.
All other screws are 8-32 - the class 2b threads are perfectly realized in the stl, no need to retap."
https://youtu.be/VV6uyNE91qY