Let's play What is it ??????

[Tony Wells]

Like linen fibered phenolic? AKA Ryton?

 

[Bill Gruby]

Sometimes the mind moves too fast these days. Yes, it is Phenolic.

"Billy G" :whiteflag:

 

[Tony Wells]

One possibility comes to mind for that is a sort of belt drive to spin a part being ground. Just a wild guess though.

 

[Bill Gruby]

Anything is possible at this point Tony. I did some more research and came up with this.

http://www.haythornthwaite.com/Tool Grinder.htm

Kinda gets the gray matter all in a swirl.

"Billy G" :thinking:

 

[Tony Wells]

I too ran across that link. Looks like a good, but rather involved project.