This is a very simple DIY clamping system created for my Workbench and my BenchDogs.
The cylinder part must just be placed on the (previously published) benchdogs and hold/guide a M6 threaded shaft, at least 200mm long or maybe more.
The stop part has a M6 threaded hole for screwing the shaft.
A standard M6 scroll wheel is used to push the stop and block the objects.
F3D and STEP files included.
The author marked this model as their own original creation.