I'm making another ER chuck for the lathe and will be making my own backplate. Previously I used 12L14 I think. I know cast iron is the preferred choice. I never really noticed any issues with the 12L14.
Any opinions on what material?
I'll be making the collet out of A311 Stressprrof.
Any opinions on what material?
I'll be making the collet out of A311 Stressprrof.