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Cutting accurate measurements with a table saw

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Forum topic by JonK posted 05-17-2013 04:23 AM 1513 views 0 times favorited 5 replies Add to Favorites Watch
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JonK

43 posts in 1443 days


05-17-2013 04:23 AM

Topic tags/keywords: cutting plywood tablesaw tips jigs tablesaw

Dear woodworkers,
I have discovered that sometimes when I cut expensive plywood (or any of that size) that it will cut shorter in width because, I can’t seem to hold it close to the fence. This is not a 4×8 sheet, it is laminated cabinetry plywood so, you can see my frustration when I miss cut expensive plywood.

What tips do you guys have and is their a tip to correct my procedure of cutting? Thanks for the wisdom.


5 replies so far

View Loren's profile

Loren

8309 posts in 3112 days


#1 posted 05-17-2013 04:31 AM

Board Buddies™ or other similar products can help.

Often I rip 1/2” or so oversize. Plywood moves a
bit as stresses are released. I have an edgebanding
machine that requires jointer-straight edges for
best results. After ripping parts a little oversized,
I let them move overnight, then check the parallel
edges for concave/convex. Then I rip again to
get a straight edge for the bander. Usually this
is good enough but sometimes I straighten the
edge that goes against the fence first if it is really
bad – and then I can get a pretty straight rip on
the other edge.

You can use a jointer of course, but it is hard
on the blades to run plywood on it. I prefer
to use a hand plane. The reference edge is
usually not banded and goes at the back
of the cabinet where it won’t be seen.

View RogerInColorado's profile

RogerInColorado

321 posts in 1419 days


#2 posted 05-17-2013 04:48 AM

Check your splitter to make sure it is PERFECTLY aligned with your blade. Even a tiny misalignment can drag your material away from the fence and no amount of force you can apply will keep it pushed to the fence. Mine has a bad habit of looking aligned but the rod it attaches to has rotated a tiny bit. I now check that it is perpendicular to the blade every day using a square. Not square will also cause the problem you describe.

View NiteWalker's profile

NiteWalker

2735 posts in 2041 days


#3 posted 05-17-2013 07:51 AM

+1 on aligning your splitter, and other than that, practice.
Or cut close leaving about 1/8” or so, then take a final trimming pass.

-- He who dies with the most tools... dies with the emptiest wallet.

View LookingGlass's profile

LookingGlass

77 posts in 1573 days


#4 posted 05-17-2013 10:04 AM

I do what Loren does…cut a little over sized and then trim it up. If a little big you can trim; if a little short….ugh ;<(

-- Take care.....Ed

View MrRon's profile

MrRon

3926 posts in 2708 days


#5 posted 05-17-2013 04:46 PM

It takes more time, but I will take a cut on scrap before commiting good wood. I don’t like or trust splitters or reiving knives. They are safety devices, but if not positioned correctly, are worse than nothing at all.

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