A Biscuit joiner is a woodworking / carpentry tool used to join two pieces of wood or chipboard together. It is basically a modified 4” angle grinder body, fitted with a specially designed cutting head fence.

[edit] How does a biscuit joiner work?

A biscuit joiner uses a small (4") blade to cut a crescent shaped hole in the opposite edges of two pieces of wood. An oval shaped wooden biscuit is covered with glue, placed in the slot, and the two boards are clamped together.

[edit] Why would I want to use a biscuit joiner?

Simplicity! A biscuit joiner is simple and quick to use. You can create joints in a fraction of the time it takes using more traditional woodworking techniques.

[edit] Are Biscuit Joints strong?

Yes, for most applications a biscuit joint is sufficiently strong.

[edit] What are the biscuits made of?

Most biscuits are made from compressed beech shavings stamped out into an oval pattern. Glue in the joint soaks into the biscuit causing it to swell and tighten up in the joint.

[edit] What size biscuits should I use in my joints?

Generally you should try to use the largest biscuit that will fit. In most cases this will be a #20. Sometimes, especially when building thin frames, you will need to scale down to a #10 or #0 biscuit.

[edit] What's the difference between a biscuit joiner and a plate joiner?

There is no difference. Both names refer to the same tool. The term "Biscuit joiner" is used more commonly throughout most countries rather than Plate Joiner.

[edit] What Types of Joints are Biscuit Joiners used for?

The most common joints are: Edge to Edge (i.e. table tops), Miter Joints (i.e. picture frames), Butt Joinery (end to end), Corner joints (i.e. drawers), T Joints (i.e. book shelf)

[edit] How do I make a T-Joint?

Step 1 - Lay the two boards you wish to join on top of each other and mark the locations of the biscuits then cut the horizontal slots.

Step 2- Cut the vertical slots.

Step 3 - Assemble the joint.

[edit] How do I lay out joints?

Laying out a joint for a biscuit is one of the best features of this tool. For most butt joints all you have to do is draw a line between the two pieces and align the center mark on your joiner up with this mark.

[edit] What should I look for?

There are a number of different models of biscuit joiners on the market from companies such as: DeWalt, Freud, Porter-Cable, Makita, Ryobi, Delta, Skil, and Lamello. Before buying a biscuit joiner you should make sure it is well made. A tool with loose tolerances and parts that slip easily will cause more aggravation and mistakes than it's worth. In my opinion, you should not just consider the price, but also the design and ease of adjusting the fence and depth mechanisms, also are the measurements and common settings clearly marked.

[edit] Tips for biscuit joinery?

• Always dry-fit your Components before gluing to make sure everything fits.
• Store your biscuits in a clean dry container. They can absorb humidity from the air and swell.
• If you notice your joiner burning or smoking the wood in the slots it's time to sharpen or replace the blade.