Objections to David Charlesworth’s ‘Ruler Trick’2018-05-022018-10-19https://www.popularwoodworking.com/wp-content/uploads/popwood_logos-01.pngPopular Woodworking//www.popularwoodworking.com/wp-content/uploads/2018/10/rulertrick.jpg200px200px
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Place the steel ruler on one long edge of the stone – friction from the water will hold it in place.
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