Re: Rubbing Compound Question???
hill, 3M is one of the finest companies in the world when it comes to answering the telephone. Call the toll-free number on the back label of any bottle, they'll connect you to a product specialist who knows all of their "finishing" products in depth, and they can tell you specifically what grit the product is, and why one or the other is better.
3M makes great stuff, and they're equally great about telling you how to use which ones.
That and Mainesail's thread, which is outstanding.