Our box-slotting router bits are designed to cut grooves to hold box or drawer bottoms, without the unsightly gaps at the corners that other methods leave.
You need only set the bit for groove inset, clamp the frame together and run the bit along the four inside faces. This ensures that all four slots are aligned and that there are no corner gaps. We offer bits for 1/8" and 1/4" thick bottoms, each with two bearings for depth control.
The deep-slot bits cut 1/4" or 5/16" deep slots; the shallow-slot bits cut slots 1/8" or 3/16" deep. All have 1/4" shanks.
Our professional/industrial grade bits have tungsten carbide inserts ground on CNC (Computer Numeric Control) machines using 600x diamond wheels. Tungsten carbide maintains its hardness at high temperatures and holds an edge far longer than high-carbon or high-speed steels. The bit bodies have a non-stick coating for easy resin removal.
Once you've used these bits, you'll wonder how you ever cut panel slots without them.
Each bit includes an advanced polymer friction-fit holder that can be mounted horizontally or upright.
They use 7mm × 3mm and 10mm × 3mm replacement bearings (available separately).