The iron was made from O-1 (oil hardening, Starret brand in this case) steel. I milled some detents at the back so it is easy to hold. An initial 20 degree bevel was milled. This angle is very low (I normally use 30) but this iron is for light cuts on end grain. Heat treatment was by the book: Heat to phase change temp (steel is no longer magnetic, around 1,500F). I use a oxy-acetylene rose bud. Hold at that temp for a bit and quench in oil (I use a gallon can full of motor oil. And yes, it stinks). Bake in the oven to temper the blade (I use 325-350 degrees to get a Rockwell hardness in the low 60s). Then flatten the back and grind the bevel.
- 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?