drill jug for drilling holes in washers

[Frank S]

I made this jig or fixture, to drill opposing holes in the face of some 3/4" hardened washers


It seems after I made these riser blocks I never run out of uses for them

I can clamp from 1 to a dozen washers in the fixture using 1 that it predrilled as the drill guide for locating the holes

Since the holes in the washers are slightly larger than 3/4" a 20mm bolt fits them very nicely holding them very close to concentrically centered