Centrifugal Disc Finisher

In the past I used a DF-12 disc finisher. My biggest problem with the
machine was the gap between the disc and the bowl. It was always
getting clogged with small pieces of media and wore fairly quickly.
Having the bowl rebuilt then cost a fair amount. I’m in the market
for one of my own and am wondering about the newer model with user
replaceable wear rings. Does anyone have experience with these? How
big a pain is it to replace the rings and what is the cost?

Brett
Freedom Design & Contracting