Thread: Dose this make sense to you?

I was reading this article on Facebook about the Colorado Crystal strata and it didn't quite make sense too me. Can anyone explain to me what he's talking about when he's talking about a 8k Grit and how he somehow gets a 20K finish off of it.

I think he's referring to the size of the garnets being 8-12k and the base stone being 20-30k. Because a garnet is round and not fully exposed it will not cut as deep as other abrasive particles of the same size.

Originally Posted by aaron1234

I apologize but it still doesn't make sense to me. if I remember correctly stones of any kind where away over time revealing new granules and is the reason overtime we have to lap stones. Also if the stone didn't we're away to review new granules it would be very perceptive to clogging up and would need to be lapped and cleaned often to account for this.

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Its a question of what's exposed. Binder doesn't tend to scratch steel, abrasive does. More exposed abrasive scratches deeper; less exposed scratches shallower. Slow wearing binder and slow wearing abrasive is consistent (DMT, etc), or may clog. Slow wearing binder and fast wearing abrasive gets smoother. Fast wearing binder exposes fresh abrasive and stays consistent (needs lapping).

It seems to me there was a legitimate question that was answered directly from the source. The promotion could have been toned down, but it looks like the post has "disappeared" altogether.

Originally Posted by StewieS

I wasn't aware that SRP open forum would allow promotional and marketing content.

StewieS.

I apologize if my post seems as marketing I don't mean it to be. There was just a lot of information brought up in those posts that raised a lot of questions for me and I figured I would make shure that you can see what I was seeing and get an idea of where my questions are coming from. If you prefer I'll delete the post. Also my reason for bringing it here was is to hear a word from someone (not affiliated with selling these stones) on what they thought and to hopefully inform me on how a stone with 12K granules can leave a 20k finish.

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Originally Posted by BeJay

It seems to me there was a legitimate question that was answered directly from the source. The promotion could have been toned down, but it looks like the post has "disappeared" altogether.

The situation is being discussed by several people, both authors of the posts have been notified & the posts may be returned, if that is the decision reached. No post is arbitrarily erased, they all can be recovered; something I have learned the past couple of days.

Originally Posted by aaron1234

I apologize if my post seems as marketing I don't mean it to be. There was just a lot of information brought up in those posts that raised a lot of questions for me and I figured I would make shure that you can see what I was seeing and get an idea of where my questions are coming from. If you prefer I'll delete the post. Also my reason for bringing it here was is to hear a word from someone (not affiliated with selling these stones) on what they thought and to hopefully inform me on how a stone with 12K granules can leave a 20k finish.

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You are right a 12 k stone cannot create a 20k finish.
What some fail to understand is that you cannot assign a grit rating to natural stones so the whole concept is moot.

Originally Posted by onimaru55

You are right a 12 k stone cannot create a 20k finish.
What some fail to understand is that you cannot assign a grit rating to natural stones so the whole concept is moot.

I don't agree with the first part of that. If a 12k abrasive is buried deep in binder, such that only so much of it is exposed, it could cut as shallow as a 20k abrasive. If the finish is based on depth of scratches, they could be the same. Might take more honing, as, in theory, 12k abrasive would be more spread out than the 20k abrasive, so it would take more time to eliminate the scratches from the previous hone. And you'd have to avoid burnishing on steel that is removed and is stuck in (what would have to be) slow wearing binder. Or the grit itself could break down, etc etc.

I do agree with the idea that assigning grit ratings only provides a rough guide, and the roughness gets more rough as the abrasive becomes finer. (ha, rough/fine)

Can anyone explain to me what he's talking about when he's talking about an 8k Grit and how he somehow gets a 20K finish off of it.



No, and it seems, neither could the seller. Pretty sure the same guy was here a while ago, selling the same story and stone.

Natural stones cannot be grit rated, they are Naturally made.

Buy a proven performer… There are no magic hones.

Originally Posted by holli4pirating

I don't agree with the first part of that. If a 12k abrasive is buried deep in binder, such that only so much of it is exposed, it could cut as shallow as a 20k abrasive. If the finish is based on depth of scratches, they could be the same.

Sure, if you're talking theoretically but I don't know of any synthetics made that way & then we loop back to assigning grit ratings to naturals