Support For Cutting 8' X 4' Plywood

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Project by CarterR posted 10-03-2014 03:58 PM 1754 views 0 times favorited 3 comments Add to Favorites Watch
Support For Cutting 8' X 4' Plywood
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I figured this may be useful to someone.

After using scraps of wood to support cutting large sheets of plywood with poor success, I decided it was time to make a permanent and easy solution. I know you could use a sheet of foam or insulation for this, but I had a leftover piece of MDF which saved me a trip to the store.

The support is made to hold a 8’ X 4’ sheet of plywood and keep it raised off the table so the plunge cut saw does cut into the table top. The support also keeps the plywood from bending and binding on the blade at the end of the cut. I think anyone who has cut large sheets of plywood knows what I am talking about.

Supporting Plywood


3 comments so far

View Dallas's profile


3599 posts in 1908 days

#1 posted 10-03-2014 04:24 PM

Interesting build.
I think it looks pretty good although I would worry about those pocket hole screws.
The head of the screws is seldom more than 1/4” down.
I say this becuase many times I have had to cut plywood that was warped or curved and the circular saw blade had to be set deeper to make it through the arched spot.

Usually I just do it on 3-8’ 2×4’s

-- Improvise.... Adapt...... Overcome!

View stefang's profile


15512 posts in 2755 days

#2 posted 10-03-2014 10:05 PM

A good idea, but I agree with Dallas about the screws. Maybe joinery with half-laps would be more practical.

-- Mike, an American living in Norway.

View RalphCompton's profile


80 posts in 2070 days

#3 posted 10-04-2014 03:44 AM

Looks good. I don’t think the pocket screws would be a big problem as long as remember where they are in relation to my cuts. I usually use a 4×8 piece of 3/4” foam that I cut into 3 32×48” pieces for storage.

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