Hi Guy,

I think it is quite important. By doing this or having the rear jaw
embedded in the bench and using the front apron as the rear jaw surface
(essentially equivalent to having the rear jaw mortised even with the apron,
just different installation method), you are able to have long boards
clamped into the front vise and use board jacks and hold downs at the far
end for full support along the length. If the rear jaw sits proud of the
apron, you can still use board jacks, but you clamping the board becomes
more difficult.

Mike
"Guy LaRochelle" wrote in message
...
I noticed that some front vises have the rear jaw flush with the workbench
edge and others have the rear jaw extruded from the edge. I purchased a
Lee
Valley front vise and they explain 3 ways to mount them. How important do
you guys think it is to have the rear jaw flush with the edge of the
table?
Regards. -Guy