Lance Link Posted November 6, 2018 Report Share Posted November 6, 2018 Anyone ever use this stuff for light scratches on plexiglass? Does it work well? Is there anything better? And, am I correct in assuming the tint goes all the way through the plastic and I won't grind through it with the abrasive? Thanks! Quote Link to comment Share on other sites More sharing options...
Hank Posted November 6, 2018 Report Share Posted November 6, 2018 Practice on a piece of scrap first . . . . Quote Link to comment Share on other sites More sharing options...
Hector Posted November 6, 2018 Report Share Posted November 6, 2018 I use Novus #2 light scratch remover. Put some on the plexiglass and use a random orbital polisher with a 6 inch polishing pad. It will look like new. Sent from my iPad using Tapatalk Quote Link to comment Share on other sites More sharing options...
jaylw314 Posted November 6, 2018 Report Share Posted November 6, 2018 3 hours ago, Lance Link said: Anyone ever use this stuff for light scratches on plexiglass? Does it work well? Is there anything better? And, am I correct in assuming the tint goes all the way through the plastic and I won't grind through it with the abrasive? Thanks! I've used it. They recommend against using it for spot treatment, it's intended to be used on the entire windshield at once, that way you don't cause optical aberrations. Translation: it requires a LOT of elbow grease. Figure one afternoon to do 4-6 successive grits, and another day for your arm to recover. It does work pretty good, but the last grit is so fine that any little piece of dust or dirt ends up causing scratches, so you need to be irrigating the window with some water while you're using it. You'll still need to buff the windshield afterwards with polish, like Novus #2 Quote Link to comment Share on other sites More sharing options...
Lance Link Posted November 8, 2018 Author Report Share Posted November 8, 2018 Thanks very much everyone. I will give it a try and report back. Quote Link to comment Share on other sites More sharing options...
cujet Posted November 8, 2018 Report Share Posted November 8, 2018 I use Micro-Mesh regularly. Some thoughts: a) Removal of scratches requires significant sanding down of the plastic surface to a depth below all scratches. b) Sanding needs to be done in an organized manner, over a wide area. Optical clarity requires a uniform surface, without low spots. c) The finer grit papers need to be used far more than it at first seems, as you need to remove all the micro scratches you just put there with the previous sanding. d) Use a lot of water as you sand. e) I use a BluePoint 3 inch buffer (snap-on) with wool pad and "Flitz" (the metal polish) as a final finish. Done with skill, it results in world class clarity. Done without care and burns result. This heli is 17 years old and I've been able to keep the windscreens perfect, including sanding down through the minor crazing and polishing. No imperfections. 3 Quote Link to comment Share on other sites More sharing options...
laytonl Posted November 10, 2018 Report Share Posted November 10, 2018 As Hank said, practice on a scrap piece of plexiglass first because sanding your windshield will give you quite a scare. The process does work. Lee Quote Link to comment Share on other sites More sharing options...
Yetti Posted November 10, 2018 Report Share Posted November 10, 2018 There was a Bo in the Grumpy IAs hanger that someone had spot polished the windscreen. Looked like a golf ball. Don't be that guy. Quote Link to comment Share on other sites More sharing options...
Lance Link Posted November 10, 2018 Author Report Share Posted November 10, 2018 Thanks, good tips on using the finest grade paper, doing the whole surface and not creating irregularities. I don't plan on doing the windscreen, it's in good shape (may have been replaced), the side windows are just lightly scratched, probably from ham fisted cleaning over the decades. I just did a major detail and cut and polish, and now these small scratches are glaring at me. Quote Link to comment Share on other sites More sharing options...
carusoam Posted November 11, 2018 Report Share Posted November 11, 2018 Side windows are so easy to replace, and low cost of materials... replacement easily is more popular than doing all the labor and risking damage to the paint... Windshield replacement requires a whole lot more... qualifications, knowledge, cost, and effort... Best regards, -a- Quote Link to comment Share on other sites More sharing options...
laytonl Posted November 12, 2018 Report Share Posted November 12, 2018 17 hours ago, carusoam said: Side windows are so easy to replace, and low cost of materials... replacement easily is more popular than doing all the labor and risking damage to the paint... Windshield replacement requires a whole lot more... qualifications, knowledge, cost, and effort... Best regards, -a- +1. I replace side windows before I would spend the time to polish them. Windshield is a different matter. Lee 1 Quote Link to comment Share on other sites More sharing options...
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