polishing plex

[scosch]

I know this has been covered before but a search here was unproductive.
Ive got a couple non opening ports with no exterior trim ring (is that a window even though its a boat?), just caulked in neatly, fiberglass to plex on my CD 30 MKII. Dont know if they are Plexiglass (acrylic) or Lexan (polycarbonate) but I assume acrylic cause it was cheaper and adequate.
They are hazy. Tried the super fine sandpaper kit from WM. Worked, sort of but not great, but haze came back.
I know replacement would be best but I want to try polish once more.
I remember recommendations for a metal polish that folks said was unsurpassed for this purpose. Can you remind me of the product.
Any other suggestions other than replacement?

[jrd22]

Novus polish, works great.

novuspolish

[scosch]

Is that considered a metal or auto or ? so I know where to look.

[tap]

It's for plastic. I bought some at a plastics supply store.

[scottyt]

flitz is also pretty good, it wont make them perfect but it may be a good step of many steps

[r.furborough]

Novus by far is the best, it is a 3 stage process and really clears ports that are opaqued by the sun. However, dependant on how bad the ports are, be prepared to have to redo them every 3 or 4 months or replace them.

[poopdeckpappy]

Try cleaning then polishing with Imar strataglass cleaner and polish




edit= finishing my comment ......duh

[nereussailor]

How would one of those kits for polishing headlights on a car work? or am I way off base on this?

Dave

[scosch]

thank you gentlemen, Ill try them all if need be.

[r.furborough]

the problem with plexi is that the surface degrades and although it looks just cloudy the surface is just covered in minute cracks. Some products use what they claim to be 'nano-technology' to correct the problem. These products just fill the cracks but do not last. These are the easier products to use. Others are a multi-stage product using different abrasive compounds to remove and polish the plexi. These correct the problem for a longer period of time but eventually the problem will return. In my case, within 6 months,