“The slot for a #0 biscuit measures about 21⁄8” wide, so you can’t hide a biscuit joint in stock narrower than this. Even a well-tuned biscuit joiner can sometimes cut slots that result in a non-flush-fitting joint. Cutting the spline slots on your tablesaw requires a tall jig, but you can cut them easily and quickly with your biscuit joiner and the attached fence jig, see drawing below.
Biscuit joiners are great for when you want to securely fasten a butt joint on your woodworking projects. George Vondriska teaches you how to use the biscuit joiner to attach a shelf at a 90-degree angle to the face of another board.
When adjusted properly, the biscuit joiner will cut a slot 1/32″ deeper than half the width of your biscuit. As you begin to setup for your cut, start by carefully positioning the biscuit joiner to align with your biscuit placement mark. Once you get solid placement of the biscuit joiner and fence, find the detent on your biscuit joiner’s fence, place your thumb firmly on the detent, and let go of the handle to allow the biscuit joiner to “Bottom out” on the work piece.
how use a biscuit joiner Related Question:
Are biscuit joiners worth it?
Biscuits joints serve best as a quick and easy way to keep glue-up parts in alignment, and that they add appreciable pull-apart to strength joints that would be otherwise too weak to stand on their own – like butt joints and miter joints.
Can a biscuit joiner be used on plywood?
However, with a biscuit joiner, clean, unobtrusive joints can be made in plywood, with no visible hardware and clean edges coming together. Whether joined together at 0 degrees, 45 degrees or 90 degrees, all joints are clean and tight, as well as being strong.