Rabbeting

A rabbeting bit has a cylindrical carbide body with a shank above and a pilot bearing below. The bearing rolls against the edge of the workpiece and limits how far the cutter reaches into the wood. Swapping in a smaller bearing exposes more cutter, producing a wider rabbet; a larger bearing produces a narrower one — no fence adjustment needed.

A rabbet is cut along the edge or end of a board, producing an L-shaped notch on the perimeter. A dado is cut across or along the face of a board as a channel in the middle of the surface. Rabbets typically accept backs, panels, or mating edges, while dadoes accept shelves or dividers.

Measure the actual panel thickness with calipers — nominal thicknesses like 1/4 inch or 3/4 inch often differ from real dimensions. Select the bearing from a set like the Mega Rabbet Set that produces the rabbet width matching your measured panel thickness, then confirm with a test cut in scrap.

Rabbeting bits can be used handheld along the edge of a panel, with the bearing riding the workpiece edge. Router table use offers better control for long, continuous rabbets on cabinet components. Either way, take multiple light passes rather than attempting the full depth in one cut.

A stepped rabbeting bit cuts two rabbet widths in a single pass, creating a two-tier L-profile. This is useful for decorative reveals on door inserts, where a narrow outer reveal and a deeper seat for the panel are both needed without repositioning the bit or workpiece.

A 1/2-inch shank is preferred for rabbeting work because the wider bearing stance and larger collet grip reduce vibration during the edge cuts. Use 1/4-inch shank bits only when your router accepts no other size. Both options are available in the rabbeting collection.

No special bearing is required, but plywood edge veneer can chip where the bit exits the cut. To minimize tear-out, take a shallow climb cut (moving right to left in a controlled, slow pass) on the final pass, or score the cut line before routing. A sharp, clean carbide bit also reduces chipout significantly.

Spin each bearing by hand before use to check for roughness or wobble. Clean bearings with compressed air to remove sawdust, and apply a drop of light machine oil to the bearing race if the spin feels gritty. Replace bearings that wobble or feel rough — a worn bearing causes an uneven rabbet width and can burn the wood.

Yes. A typical cabinet carcass uses dadoes to house fixed shelves, rabbets to seat the back panel, and sometimes a combination of rabbets and dadoes for face-frame attachment. Explore the grooving router bits collection alongside rabbeting bits to cover the full range of case construction cuts.

Yes. Infinity Tools offers a price-match policy; see the price-matching page for full details and how to request a match.