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I make long C clamps using some hard plywood. You can do a lot of compression with these extra powerful clamps. It is very useful thanks to its long arms. It is also strong enough to break the board. After downloading the dimensions PDF and watching this video, you can easily make Extra Strong Long C clamps. Adjustable distance very useful.
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PDF Download : Extra Strong Long Reach C-Clamps
Did you see this ? GreenSaw G Clamps
During compression, the ruler slipped and I could hardly get the size I wanted. To solve this problem, I designed a new ruler marking gauge.

Do you want to cut exactly 90 degrees or 45 degrees with your table saw? Moreover, you can easily do this with a miter gauge.