This is a simple router attachment for a Dremel, I didn't want to buy one because they're rather spendy for the 5 minutes I needed to use it, so I found one online and printed it, realized it had a lot of short-comings, designed my own, and here we are. I think this version is sturdier and has more visibility than most other versions of this tool that others have put out. It requires one ¼-20 jamb nut and one ¼-20 screw of your choice. Alternatively I'm sure this model would work perfectly fine with the threads printed directly into the body so you don't need a nut. Hope you like it, please post and keep me in the loop if you try it or re-mix!