Originally Posted by
SCzEngrgGroup
I have two 3-jaw chuck fixtures - one with a single chuck, another with 4 chucks. They are among my most-used generic fixtures. Both are just a chunk of 6061 1"x 6" of appropriate length The chucks are bolted to the plates from the bottom, as most small chucks have 3 mounting holes drilled and tapped on their back sides. The plates are machined so the front and left edges are a known distance from the center of the first chuck (3" in both cases), so I can mount the plate to the table, or in a vise, set the fixture offset to the left-front-top corner of the fixture, and go to work.
Regards,
Ray L.