Precision Trimming Jig

Precision Trimming Jig

Make perfectly flush joints on large pieces
of edged plywood with this portable jig.
Glue on your edging so it’s anywhere from
1/16-in. to 1/8-in. proud of the plywood.
(You don’t have to be fussy because a router
will cut through the excess in no time.)

You can use any size straight bit with
this jig, but to cut wide edging in one pass,
go with a mortising or dado bit. They’re
both designed to make extremely smooth
surfaces.

To set up the jig, lower the router bit
until it’s flush with the bottom. Then turn
the jig over, turn on the router and run
the fence along the edging. The long arm of
the jig acts as a counterweight to balance
the router.

There’s a catch, though: if you’re edging
three or four sides of one panel, you’ll have
to glue and trim them one at a time.This jig
won’t cut into a corner!