Printed everything at 0.16mm + variable layer heights enabled.

The threaded rod is 310mm long with an additional 20mm for the handle, it is compatible with right and left turning nuts at the same time, so by turning the rod clockwise, the clamps move towards each other.

It can be printed diagonally in one go on a 250mm printbed if aligned correctly.

After printing glue both sides or the threaded together and lock one end down by screwing on one M10x1.5 nut.

For the clamp closer to the handle you should use the left-turning nut and for the clamp at the tip a normal right-turning nut. That way when you turn the rod clockwise while the clamps are hold stationary, they will tighten against each other.

You can shorten the rod as needed. If you need a specfic length, just leave me a comment and I'll add it asap.