Reply by Galootinator

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Posted on Flattening Rough Board with only Low Angle Jack?

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40 posts in 747 days

#1 posted 10-06-2017 01:52 PM

I’m sure there are several techniques that different folks would suggest. I will explain how I would approach a job like this, and let others add to it if they have a different approach.

I would bench dog the drawer front being worked to my work bench. I would then place a winding stick or straight edge at each end of the face of the board, to visually see if there is any twist.

If flat, I would plane across the grain at an angle to minimize tearout, orienting my plane basically corner to corner. The mouth of your plane will affect how aggressively you can go about this…as you don’t want wood to jam in your plane.

If the panel is not flat, I would use the same across the grain technique, but working the high corners of the twist, that I previously established with the winding sticks. After each pass on the opposing high corners, your board will be more flat and true than the previous pass. I would keep doing this…checking on progress with the sticks until the face is completely flat. Once flat, this would be my reference face for the other three sides of the board.

I know this can be done with a low angle plane…I recently flattened a twisted and cupped piece of spalted maple that was 4’ long and 10” wide, with only a low angle block plane.

I hope this helps

-- I've never been accused of withholding my opinion ;)-- Walter M. ~ Missouri

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