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SESK: Stuff Everyone Should Know · sesk.info/wood-biscuit-joint

In a biscuit joint, what goes into the matching slots cut in both boards?

An oval wooden biscuit, glued in place.

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  1. An oval-shaped wooden biscuit with glue ✔
  2. A round metal pin
  3. A screw driven at an angle

Why: A biscuit joiner cuts matching slots, and a flat oval biscuit is glued in to align and strengthen the joint. It is popular for lining up boards edge to edge. An angled screw is a pocket-hole joint.

Huh, didn't know that: Kreg warns biscuits can swell and cause misalignment if they are exposed to moisture.

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What kind of sushi does a lumberjack order? A log roll.
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References

Answer: An oval-shaped wooden biscuit with glue. A biscuit joiner cuts matching slots, and a flat oval biscuit is glued in to align and strengthen the joint. It is popular for lining up boards edge to edge. An angled screw is a pocket-hole joint.

  1. 9 Types of Wood Joints (Kreg Tool) learn.kregtool.com/learn/joining-wood
    a slot is cut into both pieces of wood with a biscuit joiner, and an oval-shaped biscuit is inserted with glue
    Checked 2026-10-10.
  2. 9 Types of Wood Joints (Kreg Tool) learn.kregtool.com/learn/joining-wood
    Biscuits can swell and cause misalignment if exposed to moisture.
    Checked 2026-10-10.

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