Self-induced scratches on mirror glass with razor blade.

S

SayNoToPistons

New member
I was following Chemical Guy's online tutorial for cleaning glass, which involved a (new) razor blade. It worked just fine using a new razor (with holder) soapy water on the windows of my brand new CX-5. Though after using the razor on the mirrors, rinsing, and drying them off, I noticed marring on the glass surface. It is especially apparently in direct sunlight. The scratches cannot be felt., but can be seen. I followed the same regime for the windows using Klasse AIO and SG on the mirrors. Didn't help with the marring.



Is there anyway to correct the marrying I put into the glass surface of the mirrors?
 
Not that I am aware off.

The technique they promote was fine 20 or 25 years ago, but with the changes in the glass used today for mirrors is not all that good a method.
 
Curious, why you used a razor blade (new) to clean glass on a late model car?



Why not use a mild clay bar or a dedicated glass polish for the glass and a mild chemical cleaner for the mirrors?
 
I have used clay in the past with decent results. Just had sap and bug stains on the glass itself. After watching the Chem Guy's tutorial, I thought it would be safe to do so myself since Chem Guy's are relatively reputable and repeatedly state they are giving "PROFESSIONAL ADVICE".
 
This is exactly why I stick to PLASTIC blades on most jobs like these.



If you are going to use a carbon steel blade on glass, bend it into a very subtle "U" shape so the outer corners of the blade don't dig into the glass. That makes it much more difficult to cause damage.
 
C. Charles Hahn said:
This is exactly why I stick to PLASTIC blades on most jobs like these...
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Everybody doing detailing oughta have plastic razor blade on hand, very handy things.



And yeah, scratches on mirror glass are forever.
 
I would avoid anything like steel wool or razor blades on mirrors. That could be an expensive mistake! I have yet to see side/front/back glass get scratched with a razor blade when used carefully. It's used on millions of brand new cars each year by new car porters that have no clue about what is right or wrong. You just need to make sure the razor blade is fresh, you use lots of lubrication and you keep the blade on an angle.
 
David Fermani said:
I have yet to see side/front/back glass get scratched with a razor blade when used carefully. It's used on millions of brand new cars each year by new car porters that have no clue...
Click to expand...



I've had damaged-by-others glass that I attributed to steel razor blades. Most recent new vehicle with it was that POS Mazda MPV I used to have.



Some of the early "new glass" on Jags (what was it called..."triplex"?) in the early-mid '80s was *very* fragile indeed. My JXS avoided injury, but many didn't.
 
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