How to Install a Veritas Twin Screw Vise

Measure the width of the board on the end of the bench. This board acts as the rear jaw of the vise and should be 1 1/2 inch thick and 6 inches in height. Measure the width of the bench's skirt. If your bench's skirt plus rear jaw exceed 3 inches in diameter, refer to the installation instructions for directions on how to modify your bench to accommodate this vise.

Measure the height of the board on the end of your work bench with carpenter's square. Divide that measurement in half and mark the center line across the end of the board using the carpenter's square. This line needs to be at least 1 1/2 inches from the top of the board.

Measure the width of the board on the end of the bench. Subtract 12 inches from this measurement and divide the result in half. Use the carpenter's square to scribe two vertical lines on the end board, the measurement determined, from each end. Where the two lines intersect are the locations to drill the dog holes.

Clamp the front and back jaws together aligning them using their edges. Place the clamped jaws in the drill press and drill two 1 1/2 inch holes using the intersecting lines as the center of each hole. Remove the clamps holding the boards together.

Measure 1 1/4 inch from the outside edge of each hole towards the end of the rear jaw and mark a vertical line with the carpenter's square. Mark a horizontal line on the board aligning it with the top edge of the hole's. Repeat this process to mark the exact location on the front jaw.

Drill 3/8 inch hole, 1 inch deep, on these two markings for the rear jaw using the drill press. Drill 1/2 inch hole, 1 5/8 inches deep, on these two markings for the front jaw using the drill press. Lightly sand the leading edges of the drilled holes.

Insert the vise screws through the holes in the rear jaw. Drill 1/4 inch marking holes through the vise screws mounting bolt holes into the rear jaw. Remove the nuts and drill 7/32 inch pilot holes, about one inch deep, using the marking holes as the center points. Secure the vise screw nuts to the rear jaw using the supplied No. 14 flat-head screws.

Secure the rear jaw to the work bench using the four 3/8 16-by-5 inch bolts, nuts and washers. Tighten the bolts with a wrench. Tap the 3/8 inch diameter steel pins into the holes on the rear jaw with a hammer.

Wrap the supplied chain around the sprockets and set the vise screws into the front jaw. Align the front jaw with the rear jaw's nuts and turn each screw a little at a time until the front jaw's weight is supported by the rear jaw.

Drill 3/16-inch pilot holes through the thrust plates mounting holes, 1 1/4 inch deep. Secure the thrust plates with the four supplied bolts and washers.

Squeeze together the chain and tighten the set screws until the chain is snug, but not tight.

Hold the chain cover over the chain and secure by drilling two 5/32-inch pilot holes through the mounting holes then securing with the supplied screws and washers.

Push the vise handles into the tees on the end of the screws and lock into place by tightening the set screws.