My solution is two pieces of 25 x 12 x 130mm steel bar with threaded hole set in the centre of one end forming a lever nut, round of the sharp edges to protect your hands.
Half inch bolts and a washers set from underneath the table completes the vice clamps. No more looking for a clamp. For an application like this a Whitworth thread is stronger than M12. due to the coarser thread
I just loosen the clamp levers and vice and all drag the vice into position.
Much stronger than a G clamp and no spanner needed.
Only a few minutes to make. cost from the scrap bin….nil.
Regards
John
Edited By John McNamara on 01/04/2016 08:02:19