door hinges router template

There is a porter cable tool on the market, but I wanted to improve that tool:

First, with 3d printed template, it's so cheap I can print 3 and fix them together with a piece of wood to have perfect spacing between hinges.

But the original tool is fixed to the door with nails or screw and it leaves ugly holes. so I wanted it to be fixed to the door with a clamp system.

This clam can be fixed on the door or on the door frame.

It uses 1/4-20 bolts and nuts.

Here is the router bit you'll need

https://www.google.ca/search?safe=off&tbm=isch&sa=1&ei=m1LRWuHsKMOb5wLTyZnADw&q=door+hinges+template+router+bit&oq=door+hinges+template+router+bit&gs_l=psy-ab.3...43685.44167.0.44289.4.4.0.0.0.0.119.337.3j1.4.0....0...1c.1.64.psy-ab..0.0.0....0.Rg3n7o9YuN0#imgrc=AauBZY55QW1O2M: