Thread: Article’s related to the release of patents on manufacturing synthetic abrasives

For those that may be interested in how synthetic abrasives were manufactured. Attached is an interesting article on the use of Litharge or Lead oxide filler as opposed to iron, zinc or chrome oxide in abrasives.

https://www.google.com/patents/US2083719
Feel free to click on some of the other patent listings “Referenced by Manufacturer” at the bottom of these articles.
Mike

https://www.google.com/patents/US211...weDNUQ6AEIKDAC

https://www.google.com/patents/US2308983

Here is the razor hone referenced here.
https://www.google.com/patents/US211...weDNUQ6AEIKDAC

Thanks for the interesting thread. Is this a stone that you own, and have you tried it? It looks like it might be useful with X-strokes. Also is the stone symmetrical from side to side and end to end.

Alex

Originally Posted by alx

Thanks for the interesting thread. Is this a stone that you own, and have you tried it? It looks like it might be useful with X-strokes. Also is the stone symmetrical from side to side and end to end.

Alex

Good to 'see' you Alex !

Yes good to see you and thanks for starting a dialog Alex. As you know research AND practice is an important part of learning to rightly divide the truth. Topics regarding the use of dished, concave or convex hones has come up on different forums. As have compositions and abrasives used in synthetic hones. There are many interesting topics encapsulated in this thread.

I have used this AM Hone Co, Olean NY barber hone and it is symmetrical to Kollers Feb 23, 1937 blueprint (which was drafted by hand). It is an effective synthetic hone when using an X-stroke. It is part of the Randy Tuttle collection (randydance) which I was sanctioned to test some years ago.
MIke