Involute Dog Clamps
grabcad
Marius Hornberger describes some brilliantly simple dog clamps on his YouTube channel.See https://www.youtube.com/watch?v=O-rqf4uSXREThis is a recreation of that design using involutes. My dog holes are 15mm diameter on 100mm centers. The pattern includes two plain levers and two for use with the extension blocks (the ones with the square holes). I have included 6mm dowel holes to align the involute extensions.
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