|Forum topic by Thuzmund||posted 11-12-2014 02:29 AM||2330 views||0 times favorited||16 replies|
11-12-2014 02:29 AM
So the other day I decided that my face shield visor needed cleaning because it was covered in tree sap from green turning. NOT THINKING about what I was doing, I reached for a product I use on my car’s GLASS windshield—Goo Gone, which is petroleum based and a very powerful solvent. Well, guess what happened when I put a solvent on my PLASTIC visor? Haha, a sticky mess.
SO I set about fixing my mistake. I wet sanded to 2000 grit, but no love—just a lot of hazy, swirly scratches. Then I broke out my buffer and polishing compounds, green and white. Better, but still not great.
Next I will try my finest compound—blue—and if that fails, use a 3M headlight restore kit I bought for my car a while back. I am pretty sure that my visor is polycarbonate, just like car headlights, since that resists shattering.
I will report my results. But I also thought I’d share this really neat resource on visor rejuvenation, which calls for using a heat gun! Interesting: http://www.jmu.edu/cisr/journal/10.2/r&d/heafitz/heafitz.shtml
Also, I hear that clear coat polishes, like this one from turtle wax, can be effective for that final finish: http://www.amazon.com/06610-Clear-Coat-Polishing-Compound/dp/B000BO910A/ref=lh_ni_t?ie=UTF8&psc=1&smid=A3TX4YUK2VIRSQ
I have also heard of a protective coating on certain polycarbonate lenses that must be removed if you intend to polish. If my next steps fail, I will attempt to wet sand down a bit further in an attempt to get beyond this layer (assuming it’s been applied to my visor). Worth a shot before I throw it out.
But I wonder if anyone else out there has attempted to restore a scratchy old visor or piece of polycarbonate? Future readers would probably love to hear from you.
Happy Veterans’ Week!
-- Here to learn