Experimented with approaches to remove canopy surface scratches, likely due to poor cleaning techniques. Using a 18"'X24"X0.22" sheet of plexiglass (Lowes 1AG2123A), lightly scoured 1/4 of the surface with red Scotch Brite pad in circular motion. Started linear sanding with a pre-wetted 1500 Micro-Mesh (KR-70) using moderate pressure for about 2 min. A good slurry forms indicating material removal. Wiped surface with moist microfiber cloth and checked that swirling scratches from red pad were gone or repeated sanding. Next, wiped surface clean with water and a damp cloth and continued linear sanding with 1800 Micro-Mesh at 90 degrees to the first sanding direction for about 2 min. Wiped surface and inspected that previous sanding marks were gone and moved on to 2400 Micro-Mesh and 3600 Micro-Mesh.

At this point, I switched to using 3M Perfect-It EX AC Rubbing Compound (36060) applied using a 3" yellow foam pad (Harbor-Freight 69335) attached to my cordless M-12 drill with 90 deg adapter. Applying moderate pressure, polished the surface at 1500 rpm for abut 2 min or until material disappeared. Wiped surface clean with water and a clean towel and applied Micro-gloss from the Micro-Mesh kit using the 3" white foam pad using moderate pressure at 1500 rpm for about 2 min. Finished cleaning with soap and water.

These final steps deviated from the Micro-Mesh but I felt they provided a superior finish in a shorter time. For these scratches, it was essential to start with the 1500 Micro-Mesh and work up to the 3600 before using the 3M rubbing compound. Deeper scratches will probably need an initial sanding with 400 grit sandpaper.