These clamps are great for a variety of projects that require quick and easy stabilization of materials. Much more than for woodworking, the Irwin Quick-Grip are great for clamping 1/4" polycarbonate sheet where holes need to be drilled through the entire stack.  The same situation arises with stacked metal plates where a quality vise is not available. As other reviewers have mentioned, the one-hand operation is great for quick application of glue, especially for the type that expands. Use of Gorilla Glue often requires such clamps because the expansion force pushes apart the two pieces to be fused. The low cost of these clamps suggests that avid hobbyists and DYI home repair types purchase these clamps before they are needed.