Caul Woodworking. They're so common that when we talk about woodworking techniques we usually forget to mention cauls - they're just there. Watch this demonstration by our expert woodworker George Vondriska to learn a simple, worry-free approach to bending wood quickly using a heated iron.
How to Make Scrap Wood Cauls to Assist in Clamping and Gluing Joints. One of their most common uses is in applying clamping pressure across the shelf dado in the side of a case piece, where it's imperative to achieve pressure across the. The trick, is figuring out how much of a curve to put into the caul in the first place.
This is especially important if you dug the wood used to make the cauls out of the scrap bin and it has a knot or other defect on one edge that could leave an imprint in the material being clamped.
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Generally they are just stout beams that are clamped at the ends. This way, you won't risk messing up your actual woodworking project as you learn the basics of this important technique. A regular caul works just fine, but using a cambered caul can help you reach areas that a regular caul cannot.