Need a mounted 1" hard Arkansas grinding ball.

[neophyte]

Anyone know where I can get one ? Black Arkansas would be great if I could get it. I use it to lightly chamfer the muzzle on a squared cut of a
12 ga. slug gun. I have used other options but finding this tool would really help. I need it hard and fine.

Need some help out there.

[PeteH]

If you can't get hold of a mounted stone, you could use a steel ball bigger than the bore (or a marble if you can find one) and some grinding compound. It might take a little longer but will do the job.

[Qst42know]

Lapping compound tends to embed itself into the softer item being lapped and cut the harder. Copper, brass, or mild steel ideally mounted on a valve lapping tool would cut much quicker.

[neophyte]

Have had occasion to use both methods. My question still stands as it is. Anyone know where I can get one ?

[Qst42know]

You will be hard pressed to find a mounted Arkansas stone like you seek. It is a mined natural mineral difficult to shape and unpredictable to spin.

You may have to settle for a molded man made abrasive. These folks have a broad selection. Ask what they have to offer.

http://www.modernabrasive.com/index.asp

[browne]

brownelle sells a cutter for this

[roundnose]

This is your answer,

Find a lapidary "rock hound" group, one is bound to have one of these machines-2nd one down.
http://www.cabbingmachines.com/sphere-b ... ines.shtml


Find the material, have them made.

[Motorcop]

Neophyte: I took a look at the Modern Abrasives website and they have a lot of stones. Did you see anything there that fit the bill for you? Rick