Round column mill for head work

7B83DF60-F15F-4B51-A41D-89D202B016F8.png

This is a cutter for a Bridgeport type mill used for surfacing heads. It’s at least 8 inches in diameter on the big end. I would say with a 1/2 hp motor, I would guess the biggest depth of cut one could take per pass is .025.