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12 ways to get the best from your biscuit joiner

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2 photo together

3. Reinforce too-narrow joints with back-side biscuits

The slot for a #0 biscuit measures about 2 1/8" wide, so you can't hide a biscuit joint in stock narrower than this. If you're making face frames -- which are typically narrower than that -- you won't be able to join them with any of the three standard biscuits. Here's a way to reinforce a joint with full-size biscuits on the back side -- provided they won't be seen. Glue and clamp the mating boards together. When dry, cut slots across the joint line no deeper than 2/3 the boards' thickness, and then glue in biscuits (top photo). After the glue dries, cut the biscuits off and sand them flush.

If you make a lot of narrow face frames, consider purchasing Porter-Cable's biscuit joiner, which includes an extra blade to cut smaller face-frame slots for special 1 1/4"-long biscuits.

Buy the Porter-Cable 557 biscuit joiner

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Comments (1)
8033936831
woodclaver wrote:

Hafele has special half-biscuits for this now, made of very durable plastic, with tapered grooves to help pull the joint together.

5/25/2012 10:05:28 AM Report Abuse

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