Depends. If you are just doing this one job and that is it, then do as suggested elsewhere and measure twice and cut once. You can clamp a straight edge to the plywood and cut exactly where you want to cut. Might have a bit of trouble finding a true straight edge that is 4 or 6 or 8 foot long to guide your saw. This approach requires time to clamp the straight edge exactly where you need it. Not a slam bang thank you maam job.

If you want to cut this plywood and lots of other plywood exactly where you want every time, then get a rail guided track saw. Such as the Festool TS55 or TS75 saws. Easy to use these saws. Just lay the guide rail on the pencil marks, clamp in place, run saw on guide rail. Done. Quick and easy. This is the method to use if you are going to cut plywood exactly over and over.



On Saturday, June 23, 2012 2:06:40 PM UTC-5, MJ wrote:
Ok, I'm amount to tackle a project where I need to
cut some plywood to "dead nuts'. I can rip easily enough
with my TS, but cross cutting will be a challenge and not
possible with my TS (not enough real estate on the saw for the cut).

I was thinking of cross cutting with a circ saw to a length
slightly larger than what I needed, then come back and
use a router with a compression bit to get it "dead on".

Any other good suggestions?

Yes, I know about
building one of those circular saw cutting guides, but I got one
for the rough cut, but don't trust it for the "dead on". I just
want to "whisper cut" with the router, to get it to size.

MJ