“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.
how to 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.
How is a biscuit joiner used?
A biscuit jointer, sometimes referred to as a biscuit joiner, cuts notches in both pieces of wood you wish to join, into which you insert and glue a biscuit. The resultant joints are strong and reliable, preventing any lateral movement in your workpiece.