A Machinist’s Tool for Woodworking

A 1-2-3 block | Construction Pro Tips

A 1-2-3 block is a machinist’s tool that one of our woodworking experts uses every day in his shop. It’s a 1-inch x 2-inch x 3-inch block that has perfectly square sides and sharp corners that make it ideal for simple layout and setup. Use it to check for square, to true up saw blades and to do lots of other tasks.  A set of two costs about $25 on Amazon.

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Originally Published on The Family Handyman