Derek introduced his planing stop in another thread.
Here is something rigged up in my shop to hold a bunch of pieces being mortised:
Keeping an Eye on me.jpg
George is watching me use a small lock mortise chisel to clean out a mortise.
The jaw extensions were made to hold the work on the bench top instead of in the vise while being chopped.
The dowels were turned to fit the ~3/4" dog holes on my bench. These are a bit loose in a hole bored by a 3/4 auger bit. The ends that are in the jaws were turned down to be tight in a 16mm wrench. This made them tight in a hole drilled with a 5/8" auger bit. These are held together just by tight fit, no glue used.
jtk