De-scratch windshield

That's great. Do you know what type of plastic it is? I wonder if results are the same across types.

I've used the product Brasso on plastic watch crystals and other plastics to shine them. The intended use is for metal polish and works fantastic for that. It doesn't seem to be well known that it's great for plastics too. I'm an old military brat and I used to help polish my Dad's uniform brass when I was a kid. You could say I have a few years experience with Brasso. Takes out swirls, light scuffs and scratches. Bare metal or plastic only, no painted surfaces. And being "dual-purpose" (like our bikes) it could save you a few pennies to buy one product for both metal and plastic instead of two.

Think it works on eyeglasses with fine scratches?

Both acrylic and polycarbonate ( and yes even glass) can be polished. BUT.....if it has a scratch resistant coating ( most polycarbonate products have to have this) polishing can lead to ruining the screen. Once you break through the coating you have a and edge that is usually quite obvious and there is nothing you can do to fix that.

realshelby said:

Both acrylic and polycarbonate ( and yes even glass) can be polished. BUT.....if it has a scratch resistant coating ( most polycarbonate products have to have this) polishing can lead to ruining the screen. Once you break through the coating you have a and edge that is usually quite obvious and there is nothing you can do to fix that.

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What he said. You can count on any decent acrylic being restorable. Poly, not so much. Unfortunately, nearly all DOT compliant windshields (this includes OEM and half of the Givi Airflow) are polycarbonate, because it is shatter resistant. Acrylic usually isn't - it can be made so, I hear, but only at great cost. (Calsci is one company that claims to make shatter resistant acrylic windshields. Madstad hints at it but doesn't say directly.)

The bottom, fairing-mounted portion of my Givi Airflow apears to be acrylic. The top, sliding portion appears to be polycarbonate. Go figure.

Macdoc said:

Think it works on eyeglasses with fine scratches?

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nope. as an eyeglasses wearer, I wouldn't recommend that. optics are a completely different level.

Macdoc said:

Think it works on eyeglasses with fine scratches?

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It could, but what would happen to any coatings for uv, astigmatism etc?

Bentwee said:

That's great. Do you know what type of plastic it is? I wonder if results are the same across types.

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A Givi brand screen.


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