Handscrew Clamp - Types of Clamps - 8 Clamps to Help in Any DIY Project - Bob Vila
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A handscrew clamp consists of two hardwood jaws and two handles with long threaded screws. This clamp's greatest advantage is that it can be adjusted for various odd shapes and angles. It distributes pressure evenly over the hardwood jaws, so it is less likely to damage or mar the wood it's holding.