Join Date: Apr 2006
Thanked 173 Times in 170 Posts
Rep Power: 12
Re: compass lens haze
You can buy a headlight polishing kit complete with polishing pad to put in your drill at any auto parts chain, that will bring it up to a new finish again.
Or you can DIY. The main brand name of plastic polish is "Novus", use #1, 2, 3 in sequence and you can make all the plexi on your boat look new. Sandpaper...probably the long hard way to work on rounded surfaces, compared to a polishing wheel/pad and the right polishes.
Traditional Crest toothpaste (not the gel or fancy stuff) uses diatomaceous earth aka fuller's earth as the "polish" abrasive, and that's also exactly the right stuff to put a fine polish back on plexi or polycarbonate--if it isn't too bad to start with.
If you really want to take it all the way to "brand new" finish up with 3M Finesse, also an auto paint polish but something like a 3000 "grit" equivalent.
If you can find one big cheap pair of athletic white tube socks...that's two compass cover retainers for two bucks.