These mount to the end of the bench and typically work with bench dogs along the length of the benchtop. If you prefer rectangular dogholes, cut those notches in the boards before gluing them to the benchtop; round holes can be drilled before or after assembly.
A traditional tail vise [Photos H and I] consists of a rectangular or L-shape block of wood (the jaw) fastened to a steel or cast-iron fixture that slides back and forth in a cutaway corner of the bench.
Things to know:
You have to space the vise and dogholes around the bench legs and any face-vise mounting hardware.
You also can hold stock vertically between the movable jaw and the bench.
A quick release, available on some tail vises, speeds up big changes in vise position.
A tail vise holds long stock securely without any springiness. Too much clamping force, however, can cause boards to bow up.
Retrofitting one to an existing bench typically requires adding material to the benchtop to stay outside the legs or base.
Essentially a large face vise, this type usually spans most, if not all, of the benchtop’s width [Photo J]. Typically, you use two rows of bench dogs to hold long or wide stock. Things to know:
The bench’s apron, or a built-up end of the benchtop, serves as the inner jaw.
A twin-screw vise has a large opening between the screws for holding wide stock or assembled drawers.
Planing long boards held in the jaws can move the bench sideways. Instead, capture the workpiece with bench dogs to take advantage of the bench’s full mass.
If an end vise spans less than the full width of the benchtop, install it flush with one edge (rather than centering it) so you can easily hand-plane stock held with bench dogs.
A condensed version of a tail vise, a wagon vise [Photos K and L] holds long stock securely, but with less capacity (because a tail vise opens beyond the bench’s end).
Things to know:
The gap in front of the wagon can be used to hold narrow stock vertically.
A wagon vise can be retrofitted to an existing bench by cutting a notch for the wagon and screw, and attaching the mounting hardware.
I Jaw A long mortise accepts the screw and threaded fixture, and the upper guide rail fits in the slot. (A lower guide rail, not shown, mounts beneath the jaw.) The tail vise slides back and forth along the guide rails, held in place by the screw assembly. Tail vises typically open 7–8".
J Timing chain The timing chain on a twin-screw end vise syncs the screws, so you need only turn one handle to operate the vise. (Chain cover removed for clarity.) You can adjust either screw should the vise jaws get out of parallel. Likewise, you can intentionally make the jaws unparallel for clamping irregular-shape workpieces.
Slot for upper guide rail H Jaw Mortise for screw fixture The tail-vise jaw mounts over a fixed plate. Upper guide rail
L Wagon A wagon vise moves within a closed channel to secure workpieces between bench dogs. The wagon attaches to the mechanism that rides along the vise screw, moving the wagon along with it.