PlastX is IMO the best polish for acrylic. IMO the most important phase is the 800grit or lower. All deeper scratches need to be out @ this phase.Shit, had resanded my WB for the GPU and must have had something in the paper, or really bad technique. I've done two rounds of polishing after sanding to 3000 grit, but there's still lots of hairline scratches.
Will probably have to restart at around 800 and go through the 1000-1200-2000-3000 then polish again.
On the upside I grabbed a different polish (Novus heavy and novus fine) and it seems to be working a lot better than the PlastX
You are using a drill to polish? For the flat surfaces this makes a HUGE difference. I can't comment on the quality of the pads but something like this. You'd want a pad for cutting and a pad for polishing.