.125″ 1/8″ 槽銑刀 x 4刃 – Whiteside 6705B

The ability to change the depth by swapping bearings is brilliant—I used the B26 for a 1/4″ dado and it cut cleanly through oak plywood. This bit feels solid in the router and left a smooth finish.

Swapped in a B25 bearing to get a 3/8″ cut depth for my drawer dados, and the four wings left a surprisingly clean, chip-free bottom. Exactly what I needed for tight joinery.

The bearing swap system is brilliant—I switched to the B25 for a 3/8″ cut and it took under a minute, no guesswork. The four wings chewed through the slot cleanly without any burning or chatter.