I am up to at least 12 coats of wipe on poly on the mahogany body. My intent was to go with the flat high gloss over the natural color. I guess I should have used grain filler, I attempted a method that used 1500 grit to sand in the first couple of coats. It is supposed to act as a grain filler, well if it was a tighter grained wood it may work. I have tried multiple methods to flatten/sand it since I noticed the grain still very prevalent after 5 coats. 400 dry, 600 wet, steel wool....it is better, but I think I have come to the conclusion that I need to stop piling it on and let it set a few days. Then wet sand and buff and live with the grain. Or I pile on more until I overwhelm it. Any advice?? After 2-3 coats.