DIY surface grinder

[olderdan]

Tony, what a great idea to get more out of your cutter grinder head.
If it is any help we used to do all our tool steel form grinding dry as our optical dividing heads would not tolerate coolant, the wheels were white oxide 80 grit for hard steel and they held up well without generating too much heat, the CBN wheels were always used with coolant. I like the magnet swarf catching idea.