Thread: 120 grit Sigma Power Stone - the 'Black Beast'

Originally Posted by Denim

Snaf,

Do I understand you correctly that you're attempting to create a primary bevel with the stone only, not creating a primary bevel with a grinding wheel (hand/electricity powered)? I am unfamiliar with creating a primary bevel by hand and I suspect that unless you're using a extra course diamond plate or the equivalent, it's going to take you a while to do. I'm also not familiar with the stone you're using so please excuse me if that stone is an equivalent.


Regards,

Denim

The stone he's using generally makes diamond plates look pretty sluggish.

I only say that as someone with 6 fixed diamond plate/stones, loose diamonds, a dozen very coarse stones, etc, etc.

I have not put them on a stopwatch, but the Sigma #120 might give an actual powered grinder a fun for it's money, plus the ability to have at it without fear of burning the steel. That's where it comes into it's own, you just can't burn steel with one and you can push one hard.

Make steel warm? Yeah, done that. Never hot though...

And no, there's no other stone that I know of like them. Perhaps the Norton Corundum stones are similar, but I've heard they can be rather soft as well. Perhaps the Shapton Glass Stone #120 comes close, but tends to be a tad too hard and not friable enough to cut quickly and freely.

Stu.

Thanks for the info Stu. Learned something new today.

Regards,

Denim