The #10 biscuit joint router bit cuts perfect sized slots for #10 biscuits. With a 13/32" Cutter depth, this slot Cutter is designed to cut an extra 32nd of an inch, giving room for the Biscuit to expand while soaking up the glue. 1/4" Shank. Biscuit joints provide a fast and easy way to join cabinet parts and furniture components. Simple butt joints Often do not provide the necessary strength for common scenarios. Biscuit joints provide added glue surface and EXTRA structural strength where the biscuits are inserted and glued. Even if you don't own a biscuit joiner, you can produce accurate joints with our biscuit joint slot cutting router bits. Select the desired bit based on the Biscuit size You wish to use (#0, #10 or #20).