If you have a wavy wall that you want to perfectly fit a board to, use a washer to roll a pencil along the wall (and the board) to get a precise cut (or sanding) line. [From Popular Woodworking]

If you have a wavy wall that you want to perfectly fit a board to, use a washer to roll a pencil along the wall (and the board) to get a precise cut (or sanding) line. [From Popular Woodworking]

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