Just a remix of a drill stop to limit the drill depth.
The prebuild stl-files are for drills with diameters from 2 to 14mm, but you can customize this easily for your needs with OpenSCAD, the file is also attached. You will need the great BOSL2 - library for OpenSCAD (https://github.com/BelfrySCAD/BOSL2).
You will also need 3mm screws (i used flathead screws) and heat inserts (i used ruthex RX-M3x5.7)
The customizer allows to change the tool height, the drill diameter, with or without printed diameter, clearance of drill diameter and screw holes
The author remixed this model.
Change of screw diameter to 3mm and use of heat inserts, model made with OpenSCAD so it is easy to customize