Dowel drilling guide/edge drilling guide

A parametric guide which is ideal for making matching dowel holes on the two parts of a join. Screw mounting holes aid in keeping the guide accurately and securely located during drilling.

Optionally set the "guide_hole_dia" value to be the outer diameter of a brass bush suitable for your drill bit. This will extend the life of the guide and improve the accuracy.

Ideal for printing several with different dimensions to suit all the joins in a cabinet project or similar.