Don’t get burned routing stopped chamfers
Ever experienced tear-out or burning when routing a stopped chamfer? Tear-out can happen if you rout the entire chamfer in one pass. Burning occurs if the spinning bit lingers in one spot, so you need to quickly pull the part away from the bit at the end of the chamfer. Here’s an easy way to avoid these problems. With the part on edge and against a stopblock, rotate the part into the bit, as shown top. Without hesitating, rout about two-thirds the length of the chamfer. Then flip the part end-for-end and reposition it against the stopblock with the face down and partially chamfered edge toward the fence, as shown bottom. Rout again, stopping when you pass the previously chamfered area.