Chris,
You can usually use a dovetail jig to make finger joints. I don't know
if you would get much splintering on the plywood.
Ted

"Chris Berry" wrote in message ...
Hi all,
I'd like to know the most efficient way to make fairly large box joints for
speaker cabinets without spending too much time doing it or a lot of money
on tools.
I do own a router (well two actually) that I usually use for finer work and
edges but with all the templates I've seen, there's chisel work needed to
square up the joints afterwards.
Is there an easy way to set up a template that can handle this task so that
I can use box joints for the sides (and back maybe) of the cabinet?
The pieces have edges up to 80 cm (32 inches) and are typically between 1/2"
and 3/4" thick birch ply.
I wouldn't mind using dovetails instead if it's any easier.
Thanks.
cb