A woodworking or bench vise needs to be attached to a sturdy bench in order to be useful. A bench vise is used to hold a piece of wood or metal securely while you are working on it. Without a vise, sawing wood by yourself would be next to impossible. Mounting a vise is not a difficult task, but it must be done correctly.
Decide where you would like to position the vise. You will want to position the vise near the corner of your bench. The inside jaw of the vise should extend beyond the front edge of the bench and the side of your vise should be up against the side of your bench. Before you begin drilling holes you should take a 2-by-4 and grip it with the vise to ensure that you can grip wood without hitting the bench.
Mark the four bolt holes provided in your vise with your marker. Find a drill bit that is a bit smaller than the holes.
Remove the vise and drill the holes that you marked.
Replace the vise. Insert your lag bolts into the holes from the top of your bench. From underneath, place a lock washer and then the nut on each bolt. Hand-tighten the nuts.
Tighten the nuts with a wrench. Ensure that the vise is securely attached to the bench by wiggling it with your hand. It should not move. If it does, tighten the nuts some more.