What about this Diamond paste? Idea?

**JimmyHAD** · 08-31-2009, 08:41 PM

Originally Posted by jimmyh

Hi,

I bought that paste a week or so ago and have been playing with it for the last few days.

I don't have any reference to go to for sizes smaller than 1 micron, but I do have diamond lapping film and the edge quality seems similar. I can check the finish under a 400x optical microscope for you guys though.

When I went down to 0.1 micron on my razor (and knife

) the edge was very sharp and very polished looking. I could take a (50um dia) hair from my head and cut it into 0.5mm long pieces.

For the $25 bucks spent, I'm happy with what I got.

Welcome to SRP.

**Wildtim** · 09-01-2009, 01:24 PM

Originally Posted by heck

Here is the reply from the seller to both questions as follows:

That is average grit size.

We have a high low and medium concentration. Most of our customers use the medium concentration.

OK that is all we really need to know then. average grit size isn't good enough for our purposes. If even one 3 micron piece hit out edge when we think we are sharpening at .5 micron we might find ourselves with a less than satisfactory shave.

**heck** · 09-01-2009, 01:38 PM

All you guys are the best and a very helpful group!
Many thanks for saving me.

**ChrisL** · 09-01-2009, 04:26 PM

I would say it's safe to argue that all powdered abrasives regardless of their grit rating are averages. I don't believe it's possible for abrasive and pigment manufacturers to control particle size from one lot to another to such a degree that they would guarantee that something contained only particles of one size.

Chris L

**McWolf1969** · 09-01-2009, 04:31 PM

Another heads-up, would be that some diamond pastes are made from synthetic diamonds...that would explain the cheapness of the product posted...particularly Chinese made pastes, ime.

Mac

**jimmyh** · 09-01-2009, 07:48 PM

I looked at a knife edge I made with their "1 micron" paste and that made with "1 micron" used lapping film. The film was used to polish fiber optics, but it looked to be in pretty decent condition.

There were *fewer* visible scratch lines on the paste.

Another heads-up, would be that some diamond pastes are made from synthetic diamonds...

Synthetic diamonds are real diamonds just as man made snow is real snow.

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