Simple mortise-and-tenon joints that meet at right angles can be made satisfactorily with power tools, but the ability to cut a mortise and tenon by hand opens up a much wider range of applications ...
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How to Make Simple Mortise and Tenon Joints

The “mortise” is the recess where the tenon goes. It can be cut by hand with a mallet and mortising chisel, or mechanically ...
A chisel is one of the most utilitarian and oldest hand tools for woodworking. And a good wood chisel, in particular, has sharp beveled cutting edges, holds those edges well, sharpens easily, and ...