I have read most of the messages about converting a (belt-driven) table saw to a disc sander. I have an older saw collecting dust in the corner (it's worthless as a table saw) and am considering one of the sanding discs for infrequent use. I expect it to ruin the saw or arbor bearing over time. I could care less.
The thing I am not clear on is RPM. My motor turns at 3450. The grizzly disc sander says it turns at 3450.
What should the disc spin at? It's just a pulley choice. The messages about the saw turning too fast and burning up wood don't seem clear. I assume this is because people are using the same pulley ratio as they were with the saw blade, which is faster than 3450?