Reprofiling Stone

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Aerosmith101

Joined
Oct 28, 2018
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What's a good fast cutting stone for reprofiling, right now the fastest cutting stone I have is the 220 grit plate for my worksharp GSS but I feel this is too slow for severe edge damage
 
Coarse side of a two-sided SiC oilstone is fast for that. For example, Norton's Coarse/Fine Crystolon is rated at 120-grit on the Coarse side.

The bigger factor for reprofiling is the size of the stone. Portable or 'field' size stones are usually too small to be very fast at such jobs, although it's doable (just prepare to be at it for a long while). A bench-sized stone of 8" x 2" or greater size makes fast grinding a lot easier, sometimes even with relatively finer grits of up to ~ 600 or so (in diamond), or something like ~ 320 in SiC (the 'Fine' side of the double-sided Crystolon stone). Obviously, the type of steel and blade size/thickness play into that too. So, with a big & thick blade in very wear-resistant steel, choosing a big stone in pretty coarse grit would be wise.
 
Obsessed with Edges said:
Coarse side of a two-sided SiC oilstone is fast for that. For example, Norton's Coarse/Fine Crystolon is rated at 120-grit on the Coarse side.

The bigger factor for reprofiling is the size of the stone. Portable or 'field' size stones are usually too small to be very fast at such jobs, although it's doable (just prepare to be at it for a long while). A bench-sized stone of 8" x 2" or greater size makes fast grinding a lot easier, sometimes even with relatively finer grits of up to ~ 600 or so (in diamond), or something like ~ 320 in SiC (the 'Fine' side of the double-sided Crystolon stone). Obviously, the type of steel and blade size/thickness play into that too. So, with a big & thick blade in very wear-resistant steel, choosing a big stone in pretty coarse grit would be wise.
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Thanks
 
Obsessed with Edges said:
A bench-sized stone of 8" x 2" or greater size makes fast grinding a lot easier,. . .choosing a big stone in pretty coarse grit would be wise.
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Totally.
I use a 10 inch DMT 220 bench stone then go to the Edge Pro for refining.
That's for high vanadium blades.
For the other stuff I love my Shapton Pro 120 white bench stone. A very capable stone that doesn't wear much.
these are the same old photos but I do what I can :
https://www.bladeforums.com/threads...ning-dmt-coarse-enough.1540507/#post-17695939

And here; second photo down in this post :
https://www.bladeforums.com/threads...nd-curious-of-opinions.1571481/#post-18008736
 
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I'm a big fan of the DMT XXC. 120 micron, which is roughly 100 grit, but cuts even faster (I think) because of the shape of the diamond particles. I keep meaning to get a Norton Crystolon Coarse. But looking at it, I really should probably get a Manticore (too?). Sharpening is a cheaper hobby than knife collecting I guess. Kinda. :)

Brian.
 
I picked up a 2"X8" ACE Hardware stone in SiC grit. Two grit, with the coarse side being 70 grit, for a Saw Buck. They are black stones.
This stone cuts very fast with great economy. DM
 
So far the coarse side of a Norton or Ace hardware Sic combo stone is the fastest I've used.
I plan to get the Manticore bench stone too.
 
I bought an ACE two sided 8" stone about a year ago. It was grey and I believe is AlO2 and not SiC as I had hoped it would be. It's a decent stone, but I'm not a big fan of it so far. Like I said, I just need to order the Norton Crystolon or that Manticore!

Brian.
 
bgentry, the grit you will find on a Norton JB8 will be 120 grit for coarse, 180 grit for medium and 320 grit for fine. Whereas the ACE stone of SiC grit is closer to 70 on the coarse and 180 on the finer side. Try to find the black stone in 2"X 8" or the 2"X 6". The coarse on that stone is much more coarse than on the regular Norton offering. Which is why this stone eats metal quickly. DM
 
bgentry said:
I bought an ACE two sided 8" stone about a year ago. It was grey and I believe is AlO2 and not SiC as I had hoped it would be. It's a decent stone, but I'm not a big fan of it so far. Like I said, I just need to order the Norton Crystolon or that Manticore!

Brian.
Click to expand...

I have a couple of the ACE AlOx stones, one in the 8" size and the other is 6". They're not as aggressive or clean-cutting as something like the Norton India in AlOx (mine is a recent Mexico-made stone), so I've relegated them to duties as refinement/finishing stones in some tasks (using the Fine side almost exclusively), which they still handle pretty well. Probably a little quicker to glaze a little bit as well, than the India. Sometimes, if I'm looking for something a little finer in finish after the India Fine, I'll use one of those. As mentioned, they're decent; but I'm getting spoiled on the India by comparison.
 
I suspect the black SiC stones are sent to fill orders when the warehouse is out of the grey aluminum oxide stone. So, it's by luck you see
one on the shelf in a store. In my area I have 5 of these stores that carry these stones. So, I just keep checking until I see one, then purchase it. DM
 
David Martin said:
I suspect the black SiC stones are sent to fill orders when the warehouse is out of the grey aluminum oxide stone. So, it's by luck you see
one on the shelf in a store. In my area I have 5 of these stores that carry these stones. So, I just keep checking until I see one, then purchase it. DM
Click to expand...

That's exactly what I've seen in my area's ACE stores too. Very hit-or-miss as to what they have on hand in any given week. I drop in on occasion to see if any of the SiC stones are in stock.
 
My old job issued Norton jb8's, which I like.
My new job issues Norton ib6's, and I hate them. They don't cut as well, they mud up real bad, shed grit like crazy, and dish out real quick. Definitely not for hogging off metal.
 
Aerosmith101 said:
What's a good fast cutting stone for reprofiling, right now the fastest cutting stone I have is the 220 grit plate for my worksharp GSS but I feel this is too slow for severe edge damage
Click to expand...
When I want to get really crazy (meaning take a significant amount of metal off a flat surface like the back of a chisel) I totally go for Alumina Zirconia.

Specifically Norton's blue belt sander belts. I cut the belt and spread it out flat glued to a hunk of thick particle board or MDF.

Comes in like 46 grit and 36 grit etc. !
The individual grits are way more sharp and pointy than most if any other grit and plenty durable.

Link>>>> to an old post.
 
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