Drill Press Vise Plate
thingiverse
This fits my bessey drill press vise. It is designed to hold round objects more securely. 5mm, 10mm, 15mm and 20mm round objects. You can go to tinkercad and search for drill_press_vise_plates and you can customize it to hold whatever size you like. The dimensions are 100 x 20 x 5 for the plate. You could oversize it so your plates could hold an odd shaped object (like round) with the bottom able to pass where the base of the vise is, such as is in the middle of the vise, but you are limited to depth on the larger hole holder.
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