Here's it in action,
I'd still like to improve the tone it doesn't have the nice rasp that Jonnda's has. I will try his recommendation of using cello resin on my smooth disc.
I now hope my sons will try it out at one of their Circuit Breaker gigs. https://circuitbreakerband.com/
Well it took me nearly 6 years to finish this project. I must now turn my attention to the Laurie Anderson Violin I was making.