30°-45°-60° V-Block

[rossbotics]

I was making some new locking handles for the table and cross feed on my mill the other day and had a brain storm, these handles I’m making have a locking lever that requires a tapped hole at 30° to the axis of the handles screw, drilling and tapping these holes at that angle is not a problem if you had just the right size v-block with an angle plate under it, they could also be tapped with just an angle plate under them or a dividing head and several other ways, the jaws on the mill vise are only 1-3/8” tall so it was a toss up to make just the right size v-block with an angle plate under it or just make a v-block with some common angles machined into it, so I decided to go with a v-block with three different angles milled into both faces, one side of the v-block has a 30° angle milled into it and the other side has a 45° and a 60°, the v-block is ground to the same height as the jaws on my vise making it easy to setup, the degree marks are clearly stamped to their corresponding angles, I had thought about making one of these some time ago but never got around to it nor had I the need for it until now, just another little quick setup fixture.

This block is made from O-1 steel hardened and precision ground flat, square and parallel on all six sides, the vees were then precision ground true to the adjacent sides.

I have included some photos of the machining and grinding processes and some photos of the block being used.
As always thanks for looking and happy machining

Doug