Actual machining content making a hand ball

[tom_d]

Ball is 1 1/4” in dia. I blued a piece of high speed tool and marked a radius on it. Then took a cutoff wheel on angle grinder and roughed it out. Then took a 1 1/4” stone in die grinder and tuned it up.
I didn’t have hardly any chatter I cut it at 500 rpm.
I am selling my directional drill the guy buying it was complaining that the knob to move the seat was broke, so I made a new one.

Nice job! Very impressive. What lathe are you using?

[true temper]

Nardini 14x40

[The Metal Butcher]

Ok I'm damn impressed. I came here expecting a ball turner, not a fabulous radius tool. Well done!

I use the same lathe at work, yours must be in much better knick. That one would never do that.

[true temper]

Nothing magical about it rough it out with a zip disc and clean it up with die grinder. Make sure you include some relief . Try it for yourself.
yes my lathe is in pretty good shape.

[eKretz]

That's the same way I've always made my own radius form tools. You can make custom sizes by dressing the grinding wheel to specific sizes with a diamond dresser.