- Well, I didn't expect that to work, but nothing took flight. Fly cutting steel on a mag chuck as weld prep. The chuck is so new it doesn't have a model number. Or serial number for that matter.Tee slot chamfer tool, both edges in go.Clearance is clearance Clarence. Space is kinda tight in there, lots of clamp hopscotch. Slot clean up. Using flexly flyer garage sale end mill, at least it's carbide. Cuts something like 0.012" under, maybe a regrind?