- Joined
- Feb 8, 2014
- Messages
- 11,176
If you have to buy some stones, I would go with a medium hard, 80-120 grit, and the most important...rated for your grinder speed. I would also buy a diamond dressing tool, just to make life easy. Take a look here to see how I did it. http://www.hobby-machinist.com/show...-D1-4-Cam-Lock?p=211905&viewfull=1#post211905
I would load the jaws something like this http://www.hobby-machinist.com/show...chuck-grinding?p=208594&viewfull=1#post208594 With a 4-jaw it is not critical to have the jaws exactly in a perfect ''circle'' like you would with a 3-jaw scroll chuck. You could grind only one at a time, because all you want to do is get them parallel with the lathe centerline. I would check the jaw track alignment like I did. You could do this right on the lathe, it is not necessary to to it on a mill like I did. Just mount up a dial indicator on the cross slide or tool holder.
Good luck.
I would load the jaws something like this http://www.hobby-machinist.com/show...chuck-grinding?p=208594&viewfull=1#post208594 With a 4-jaw it is not critical to have the jaws exactly in a perfect ''circle'' like you would with a 3-jaw scroll chuck. You could grind only one at a time, because all you want to do is get them parallel with the lathe centerline. I would check the jaw track alignment like I did. You could do this right on the lathe, it is not necessary to to it on a mill like I did. Just mount up a dial indicator on the cross slide or tool holder.
Good luck.