This is another tool designed to work with perforated workbenches. It should work with workbenches that have 18mm holes or larger. This was a complicated design, and may not be as straight forward as expected. You will need patience to get the springs in the correct position, and may need to adjust their length, but once they are in position stay in place just fine.
You will need one copy of each .stl, I recommend printing in PETG for durability.
I printed the Clamp rod horizontally for strength. This does not suit all printers, please check your z contact distance to supports and be sure they are detachable.
You will also need: 1x 5mm or less (1/4” or less) machine screw through Cam hole 2x 3mmx15mm extension springs 2x 3.5mm (1/8”) screws for speed nut hinge. Substitute hardware of your choice