Hand Tools

Subject:
Green and white vs. white

david weaver
The green stick that most people use is 70% alumina from what I recall. The chrome ox may have some polishing effect, or maybe the original stick was developed for something specific (probably sped up polishing on stainless steel).

it would be imperceptibly different from a white stick that was 100% alumina of the same size.

I have taken microscope pictures of edges off of green chrome as well as the formax bar, and the edge off of the formax bar is probably similar in sharpness to the 0.73 micron sigma power 13000 stone. It's not as even because the abrasive isn't as closely graded, but in subjective sharpness in use, it's about the same. You can find stray scratches in it, which caused an uproar in the razor community (despite the fact that it'll strop a razor into a nice level of sharpness when used properly, and the 6 micron particle here or there is on leather and never does actually cut that deep). Once the razor forums posted about it, a few LV trolls posted at length on woodworking boards about it and advocated green chrome paste or powder as a substitute (and the green chrome paste as a matter of doing anything other than cleaning up an already fine edge is a complete waste of time - it's too slow).

There's one handy byproduct of the green, though, in that bar - it's easy to see.

It was interesting to see at the time how many people used those bars, sparingly for razors, liked the result, and then suddenly did not because they read that they shouldn't.

The real issue with a white bar is that they're usually harder (the formax bar is soft, and scribbles off easily with a drop of oil) and the alumina often isn't that closely graded in them unless something very specific is bought. The yellow bars sold as "gold" by carving suppliers are expensive and less fine.

If you could find or make a very well done (closely graded) 1 micron alumina bar, the speed and practical result would probably be similar to the formax bar.

Messages In This Thread

Is chromium oxide honing compound still relevant
Re: Is chromium oxide honing compound still releva
Re: Is chromium oxide honing compound still releva
Re: Is chromium oxide honing compound still releva
Visually similar *LINK*
Re: Is chromium oxide honing compound still releva
Re: Is chromium oxide honing compound still releva
Re: Is chromium oxide honing compound still releva
That is what I am going to experiment with
Re: Is chromium oxide honing compound still releva
Re: Is chromium oxide honing compound still releva
Appearance...
Re: Appearance...
Re: Is chromium oxide honing compound still releva
to repeat the question....
Re: to repeat the question....
Re: to repeat the question....
Re: to repeat the question....
Re: to repeat the question.... *LINK*
Re: Good link, thanks. *NM*
sources
PS
Re: sources
Wiley you nailed it, I think
Diminishing returns
Re: Diminishing returns
Re: Diminishing returns
Re: Diminishing returns
Re: Diminishing returns
Re: Wiley you nailed it, I think
Green and white vs. white
Historical methods
Re: Historical methods
Re: Historical methods
Extrapolation of scenarios
Re: Extrapolation of scenarios
Re: Extrapolation of scenarios
I hope brian doesn't show up...
Re: I hope brian doesn't show up...
Enlighten me
No clue about historical..
Re: Enlighten me
A minerology lesson
Re: A minerology lesson
Re: A minerology lesson *LINK*
I stand corrected
Re: Enlighten me
The emphasis on speed...
What do I have?
Something called the ‘Koch System’
Historical yet again
Re: Something called the ‘Koch System’
The wax thing...
Re: The wax thing...
Re: Is chromium oxide vs aluminum oxide +...
Two questions remain
My opinion..
Marketing with the compounds...
G-456--not that it's practical
Or not...illegal to ship?
polishing stainless
Re: polishing stainless
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