I called local abrasive supplier asking about cerium oxide. They asked me if I need #1 or #2 or #3 :S I didn't know they come in different types. Previously I bought CEO in the kit and it wasn't indicated which number is it.
I said I needed the finest one. Do you know the difference among them?
I said I needed the finest one. Do you know the difference among them?
8" f/5.9 truss tube newtonian, made from scratch 8)
