Woodworking Vise Type 52 1/2 With Quick Release Mechanism
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The jaw mounting surface is 230 mm x 130 mm = 9 in. x 5 in. wide.
Distance of the holes near the jaws: 180 mm (7 in.)
Distance of the rear holes:
170 mm (6 5/8 in.)
Total length of vise:
550 mm (22 in.)
How the quick release operates: By turning the handle conterclockwise (CCW) about 1-1/2 to 2 turns, the quick release nut releases the main screw. You can slide the vise open or closed. By turning the handle clockwise (CW) about 1-1/2 to 2 turns, the quick release nut re-engages the main screw and allows you to thighten the vise normally.
Warning: Keep your fingers off between the jaws when sliding!
The vise may be mounted to the underside of a workbench top in any desired location. When positioning, make sure the vise is closed and screw and guide bar do not interfere with any dog holes, drawers, or with the legs of the bench. The vise is designed for a 90 mm (3-1/2 in.) thick bench top. If the bench top is thinner, a board or piece of plywood will have to be inserted between the jaw mounting surface and the underside of the bench top. The vise may be attached with either lag screws (12x90 mm or 7/16x 3-1/2 in.) or through bolts (M12x100 mm or 7/16x4 in.) with nuts. Countersink the bolt heads!
Shop made wooden jaw liners are easily installed using screws after the vise has been mounted. On the rear jaw liner countersink the screws heads to avoid marring work when clamping.