Just looking for some opinions
1.145" diameter, 3" long, steel shafting, 52Rc, grind to 1.125"
Themac J3 Tool post grinder installed , 2" AO 220 grit wheel for rough grinding, 800 rpm lathe spindle speed ( is this spindle speed proper?)
Grinder only came with 2 of the 4 pulleys (#1 & 4 used with very small diameter wheels or reversed and used with 2-3" wheels)
Optimum carriage speed for roughing? This 220 wheel easily takes off .004 in a single pass, no heat even without coolant
Optimum carriage speed for finishing?
Optimum grit / material for high surface finish?
600 diamond or 1200 diamond ?
1.145" diameter, 3" long, steel shafting, 52Rc, grind to 1.125"
Themac J3 Tool post grinder installed , 2" AO 220 grit wheel for rough grinding, 800 rpm lathe spindle speed ( is this spindle speed proper?)
Grinder only came with 2 of the 4 pulleys (#1 & 4 used with very small diameter wheels or reversed and used with 2-3" wheels)
Optimum carriage speed for roughing? This 220 wheel easily takes off .004 in a single pass, no heat even without coolant
Optimum carriage speed for finishing?
Optimum grit / material for high surface finish?
600 diamond or 1200 diamond ?