Woodworkers bench tail vice.
is nothing more fitting for a woodworking project than building a
workbench. The bench reflects the woodworker's attitude towards
his or her work. Whether traditional or innovative, humble or grand, it
is a fine way to express, practice, even show off, while possibly
saving a little money. (That last part is iffy.)
do a little metalworking also, I extended my bench project to include a
more-or-less traditional tail vice. I have no idea if the innards
of this vice are anything like that of commercial units.
vice is made up of 3/8 and 1/4-inch cold rolled steel. A
channel-shaped carriage weldment has long slots milled to ride on a
fixed carrier that is screwed to the bench. There is a
1-inch acme nut welded to the carrier that accepts an acme threaded rod
that is fastened to the carriage.
carrier plate is screwed to the bench with a 1/4" spacer behind it so
the carraige slots can grab the carrier without interference.
the carraige is slid onto the carrier. By the way, the reason for
the angle cuts on the ends of the cariage is so that the wood part of
the vice can have enough meat in those areas for bench dog holes.
The wood glue-up is then mounted on the carriage and screwed on fron the inside.
acme rod was turned down on one end, and a brass wear ring soldered
on. The "bearing plate" is slipped on, and then another loose
brass wear ring. The bearing plate is what pulls the carriage
along when the acme rod is turned.
vice handle was made extra long of a padouk-oak glueup turned round,
with some octagonal oak endcaps glued on. The rubber O-ring
reduced the shock of the handle cap hitting the metal fitting.
I've had a number of store-bought vices where the end caps fell
off at very inconvenient times. The fitting attaching the handle
to the rod is a modified plumbing T. The fitting is attached to
the rod with a roll pin. This is probably the weakest part of the design.
Cranking down on the handle can generate enormous forces, and
I'm pretty sure I could easily shear that roll pin without much effort.
Finally, the bearing plate is screwed to the moving part of the vice.
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