CrazyBoutRacin
Member
If you get the right guy, it works! Some of the higher end car detailing folks do it, as well as glass installers, like commercial window and mirror companies do. I’ve literally saved some original windshields doing this!
Polishing Glass?
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MIKESPOLARA
Well-Known Member
Absolutely. Anything more then very light hazing is almost impossible to remove. And if you do it will show distortion from the waves, that's if you don't crack it trying to polish it that much. The heat generate will crack the glass.
59pwrwgn
Well-Known Member
There are YouTube videos of taking out scratches. They use progressively finer grit sand paper to get to the polishing step. Much like paint. The problem in removing scratch is you are removing glass. If you only remove it close to the scratch, that depressed area gives you a distortion when you look through it. Much like feathering body work, you need to work a bigger area than just the scratch. It's is a lot of work but if you have the time and it's more of a scuff, try it.
gkent
Well-Known Member
I bought one good kit on Amazon. Came with 5 sheets of everything from 320 to 5000 grit. Included the backing and buffing pad. I think it was $30. No compound. Good deal but like I said, still wouldn't recommend it unless you a real sucker for punishment.
I would not do it. But if I was going to I would check in with your local eye glass store.
Most all still do glass lenses as well as poly .
The way they correct your vision is by grinding and polishing the glass lens surface,
Hell they can even cut in bifocal sections in glass lenses.
That's who I would talk to.
Most all still do glass lenses as well as poly .
The way they correct your vision is by grinding and polishing the glass lens surface,
Hell they can even cut in bifocal sections in glass lenses.
That's who I would talk to.
gkent
Well-Known Member
That's bullshit. Eyeglass lenses haven't been ground like that in the last 75 years !!!
68-500
Well-Known Member
He said you cannot catch his fingernail on them. Sounds like a likely candidate for polishing to me. But you some material and a da polisher and get to it! Post before and after pics.
OneOfMany
Active Member
It is possible. Glass can be ground and polished, and it is done commercially. The hard part as alluded to above is that when working on a compound curve it is difficult to sand the glass evenly, and if it is not, distortion or waves will always be present.
I gave it a shot on my hard to find 86 Laser XT t-top side glass as it had deep scratches from the glass supports. It turned out good, and any small aberrations have yet to be noticed by anyone but me. It was not just a polish, but a grind where the glass was not see through after the first step.
I gave it a shot on my hard to find 86 Laser XT t-top side glass as it had deep scratches from the glass supports. It turned out good, and any small aberrations have yet to be noticed by anyone but me. It was not just a polish, but a grind where the glass was not see through after the first step.
My windshield had some marks in it that were more like “mars” than scratches, couldn’t catch a fingernail, and a lot of pitting. I buffed it with a 50-50 mixture of rubbing compound and pumice hand cleaner. I got the mars out and some of the scratches, but couldn’t do anything about some hazing that was there. This summer while driving into the setting sun, I was concerned about having an accident due to poor visibility. Installed a new windshield, it’s like driving a new car. Wish I had done it sooner.
PsyOps
Well-Known Member
Nearly 50 yrs ago, when I was a young "knew everything" 18-yr old with little to no experience in and around cars, I took a DA sander with a greenie weenie pad to the windshield of a '66 Mustang in order to get some haze/dirt/light scratches out. I lingered in one spot way too long and all of a sudden, over the sound of the sander, there was an audible 'pop' and the entire windshield disintegrated/spider webbed into tiny shards of glass. From that day, I don't mess with trying to rehab glass. Unless you have a car that doesn't have an aftermarket windshield available or are doing a concourse restoration with glass that is original/date coded, etc. I'd strongly suggest you save your time/money and get the new glass as @Mackman did and I do. I find it interesting we will spend money on different carburetors, or intakes, or wheels, or tires, or ______ (fill in the blank) but don't have the coin for replacement glass.
Windshield wiper scuffs should come out OK. But is is messy and very time consuming. It’s a good idea to mask off around the window for a couple of feet as the polish gets slung everywhere. After getting the light scratch/scuff out or as good as it will get, I try to do the whole piece of glass as least lightly, to shine it up and make the highly polished area blend in. It’s a good ideal to clay off the glass first and get it really clean. A tack rag is not a bad idea. If the polishing pad picks up a grain of sand or something it can ruin your day. I use a single edge razor blade to scrape the pad clean often to get rid of anything it might have picked up.
Bullshit ??? Lmao
- Hot Pressing and Glass Blanks Formation: The process begins with creating the glass material. Raw materials, such as silica sand, soda ash, and various additives, are carefully measured and mixed to create the specific glass composition required for optical clarity. This mixture is then melted at high temperatures and pressed into round, thick blanks using specialized molds or dies. These blanks are selected to be larger than the final lens dimensions, allowing for grinding and polishing of the glass.
- Rough Grinding: The blanks are then subjected to rough grinding to achieve the initial lens curvature required for the wearer’s prescription. This is typically done on automated grinding machines using diamond or abrasive tools. The curvature is precisely controlled to ensure accurate vision correction.
- Fine Grinding: After rough grinding, the lenses go through fine grinding to refine the curvature and improve surface quality. This step is essential for minimizing optical aberrations and ensuring a smooth surface finish.
- Polishing: Following fine grinding, the lenses are polished to a high level of precision. This process involves polishing compounds and polishing laps that progressively reduce surface imperfections. The goal is to create an optically clear and distortion-free lens surface.
- Edging: The lens blank is then edged to fit the chosen eyeglass frame. The edges are beveled and smoothed to prevent discomfort and ensure a secure frame fit
gkent
Well-Known Member
And you think all that can be done by your local optometrist ?!?!? LOL !!
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