[OEDG] Selfcentering drillguide

Selfcentering drillguide for different bores 3-8mm. Can be centered on edges by aligning the middle pole and the pole on the corresponding bore on opposite sides of the plate. Can also be used for perpendicular holes on any surface and in very limited capacity 45° holes directly on edges.

There is a basic version with no lining and a version intended for the use of 20mm long brass pipe pieces as lining. Small, seamless brass pipes can be bought as sets for modellers with different diameters, i recommend finding a fitting set. You need outer diameters of 9mm, 7mm, 6mm, 5mm (x2 also used for the middle), 4mm at a thickness of 0,5mm. Cutoff length is 20mm. Simply hammer the pipes in or push them in clamping the whole jig in a vice and drill out with a fitting metal drill before use. Slight lubrication can be beneficial.