I will never forget my 'house on the hill' down in Amherst. The windows had been damaged by a solution of sodium carbonate and sodium metasilicate. A white haze which couldn't be removed with anything. Except diamond. I used a 5 micron compound in a syringe with Bounty paper towels. No other compound worked. Not even the acid based 'wonder products'. What I personally find fascinating is the fact that diamond compounds don't shine like this in all cases. Most of the time they perform equally as well as a compound based on a cerium or even a plain optical silica around five microns average particle size.
Another time I was working on sprinkler stains which covered dark glass. No compound worked. Even diamond compound with or without machines would touch these stains. But a 'water wheel' based on a system of hardplastic nubs which were loaded with 5 micron diamond particles knocked it off in very little time. All I used was water. The only problem was the wheel left millions of very fine barely noticeable scratches. Such were unacceptable. I never continued working on this technology until now.
The technology of superpolishing glass with diamond loaded plastic is quite common. There are many products out there. The trick is finding the exact one that will do the job and not leave any scratches. Then creating the wheel that will work best with this material. This is one of the projects that I am currently working on.
Written by Henry Grover Jr
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