I have used flush trim bits for years with no problem both top bearing and bottom bearing. Yesterday I took out my Mack Daddy Whiteside spiral compression bit and tried to pattern rout some 3/4-inch plywood. As I inserted the plywood into the bit it grabbed and slammed it into my pinky finger. Just a lot of blood and sore today. I tried everything and was somewhat able to get it to cut. I tried again to start the cut as before and it threw the piece across the shop.
II removed the Whiteside and tried a Freud FT bit. Same exact result. Is it because I trying to pattern plywood or is something else.
II removed the Whiteside and tried a Freud FT bit. Same exact result. Is it because I trying to pattern plywood or is something else.