I designed a small and practical mini bench clamp with the dimensions of (95mm*110mm*60mm),
with a clamping range of 0-59mm, and a clamping base of 47mm (suitable for worktops up to 47mm)

Assembly instructions:

Insert the longer bolt (Number 1) into the main body from the back,
lock it with the small locking bracket (Number 2) by inserting it laterally and with the letter R visible.
Insert the carriage (number 3) from the opposite side and align it with the threaded hole, and screw it by rotating the bolt (Number 1).
Screw the short bolt (number 4) from the bottom of the clamp, completing the assembly.

The tolerances are very precise, so to avoid jamming the carriage, carefully clean the burrs after printing.
In case of high resistance of the thread, screw and unscrew the screw several times and clean, if there is still resistance,
I recommend using a little grease, "the one you use for printer maintenance", on the thread

The base of the screw has been reinforced to avoid breakages during tightening.