For use with Harbor Freight bench top drill press.
DesignSpark CAD file included.
BOM is listed.
You will need to design a way to capture the clamping block on the bolt. I would epoxy a nut on both sides of the clamping block or mod the clamping block to capture nuts on both sides.
smooth rod is 8mm, although you could use english measurement stainless rod. I would suggest epoxying the guide rods in.
The handle part that holds the bolt end is exact 14mm. you may want to open it up half a mm. depending on your machine tolerances.
It is designed to be bolted to the holes in the Harbor freight drill press drilling bed. the clamping block has cutouts to allow for the heads of the nuts to protrude up.