While I'm waiting for my first order of 12L14 steel to arrive I've been reading anything I had on how HSS toolbits should be ground for this material. The references I have contend that side and end reliefs should be about 10 degrees, but side rake is in the range of 10 to 22 degrees for free machining steel and top rakes of 15 degrees are noted.
I don't know if all this refers to a roughing/knifing tool or a facing/finishing tool. What kind of nose radius is recommended, if any? What toolbit shape and lubricant will provide the best final finish?
All this applies to a lightweight lathe (Taig). I've ground up some toolbits specifically for aluminum and parting off but other than that only have the original Taig "starter set" of toolbits. Lots of blank 1/4" bits ready for grinding...what should I prep for the 12L14?
Thanks guys
Garry
I don't know if all this refers to a roughing/knifing tool or a facing/finishing tool. What kind of nose radius is recommended, if any? What toolbit shape and lubricant will provide the best final finish?
All this applies to a lightweight lathe (Taig). I've ground up some toolbits specifically for aluminum and parting off but other than that only have the original Taig "starter set" of toolbits. Lots of blank 1/4" bits ready for grinding...what should I prep for the 12L14?
Thanks guys
Garry