Strong Miter Joints with a Biscuit-Joiner Jig
An easy-to-make jig speeds box and carcase construction
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The miter joint is a simple and versatile joint that has one major flaw: Lack of strength. So I add multiple splines that make it almost bombproof.
Many people cut slots on the tablesaw or with a router, but as a high school woodworking teacher, I wanted a way to avoid the tablesaw. I came up with a safe and efficient jig built around a biscuit joiner. It is easy to use and consistently cuts accurate and attractive joints.
Boxes made simple. Ruhlmann’s students used the jig to build this collection of boxes.
The jig is safe because both hands must stay on the tool handles, away from the cutting blade. Even young and inexperienced woodworkers cut clean and accurate. Watch the video to see a demonstration of how I use it and learn more about how to build it.
Safe slot cutting. The biscuit joiner jig keeps fingers…