Trim Specialties Inc

Jointing Jig

   When I buy lumber I usually pick it up at a local lumberyard that specializes in hardwoods. To save some money I buy it as 4/4. This wood has only been roughly cut and planed and has no finished edges. To make this lumber usable I have to straighten it and plane it to thickness myself. This makes a little more work but can save a lot of money. I made this jig when I had to straighten the edge of a large stack of lumber. It would have taken quite a while to run it through the jointer and trying to do it safely would have been a challenge. I had a few toggle clamps lying around the shop so I used them with some plywood to make a jig that I could use to quickly clamp a board to and run the whole thing through the table saw to straighten the lumber. This method allowed me to cut a large amount of lumber in a very short time. I actually find myself reaching for this jig to straighten lumber more often than the jointer.

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The idea for this jig is really very simple. It consists of apiece of plywood used as a sled to hold a piece of lumber. I built up one side to give me some extra wood to screw the clamps to and add a little stiffness.

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    These toggle clamps feature a threaded rod with a rubber pad on the end. This way I can adjust the length of the rod to match the thickness of the wood. To straighten a piece of lumber I just clamp it down with the edge overhanging all along the side.

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   I set the depth of the table saw blade to the thickness of the wood to be cut.

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   With the table saw fence set to the width of the jig I run the piece through the saw. The wood overhanging the jig is cut off leaving a straight board.

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   I know that if I start out with a straight piece of plywood for the jig I will end up with a straight piece of wood when I am done.

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   With the first side cut straight I can set the saw fence to rip the remaining side to the width I need. If I have a shorter piece of wood to straighten I will use the first and second toggle clamps. I can cut a longer piece of wood by letting it overhang the ends a little.