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Scratched Glass Solution - Cerium Oxide

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  • Scratched Glass Solution - Cerium Oxide

    How to remove light scratches from glass - homemade system


    I finished up my tests on removing scratches from glass yesterday

    Here's my first attempt: Lake County-Glass Polish System
    I followed the directions exactly, with NO REMOVAL of the glass around the scratch.
    My first attempt did polish the glass but did not "remove" the scratches.
    I even had M. Phillips take a crack at it at a TNG, He didn't accomplish anything either.
    After that, I was on a mission!


    First off, I was encouraged by Mike Phillips, "Pampos", "OldModMan" & "Alfisti" to use CERIUM OXIDE and a more aggressive method. So credit is due to these people.



    Here's the debriefing on my mission to solve this problem

    It all started out with the "wonderful" body shop over spray!
    And I use the wrong pad to remove it. Next time I'll use clay. ( I used the most aggressive and not the least when I stated out, so this is what I get for not thinking about it)




    Cerium Oxide comes in a fine powder,
    mixed it with Distilled water (no minerals in Distilled Water) and put it in a squeeze bottle.
    No measuring just put about half "shot" of CO and a cup of DW.




    I used a 5" foam pad on my rotary, low speed about 2.5, with Cerium Oxide in Distilled Water
    This worked good.
    But I wanted a more aggressive pad
    My research recommended a felt or leather pad.
    I only had the terry pad and that worked better.
    (I'll address the splatter later)



    Terry pad worked better than the foam.
    I knew my felt pad would even work better but I left my LC-GPS at Meguiar's so Mike could use it.
    I couldn't wait to get my kit back.



    So here's the 50/50 shot
    Scratches on the right are removed from the left side
    So I didn't do any more to the windshield and moved on to the door








    On to the door

    The door has this "ware mark" that I can see out of the corner of my eye when I drive and it makes me crazy.


    First of all you have to use "3M Green Tape". Your working with water and Blue tape won't hold up.
    I used my 3M sweep to make sure it sealed up.
    The CO mix is basically water so it will get into everything and splatter everywhere. You have to make a "dam" around your work area, also cover up the rest of the car!
    Here's the mess you can make



    Get the corners really well!






    Just roll up your "ugo" towels that will never touch paint again
    because you'll be removing glass and I don't know if glass will come out in the wash


    Here's the scratch





    Micro shot of the damage



    Started out with the LC-GPS felt pad, LC-GPS "paste", I really wanted it to work...



    The LC-GPS paste just wasn't working so just use the CO mix




    On to the work, and I mean work!
    I would work for 10-15 mins at a time straight.

    The LC-GPS says "work for 2 mins and you should be done, if not repeat one more time"
    Well that is just not enough time to "remove glass".
    I know it's Lawyer talk so "Bubba" doesn't heat up the glass and explodes his windshield.

    That's why I've been researching this for the past month.
    Now I have a great understanding of what I'm doing (I hoped).



    I also sprayed the area with the Distilled Water,
    the glass never heated up and was not an issue if you kept the area wet.
    Here I am rubbing off the CO from the glass using DW







    I did those 15 min passes about 10 times.
    Each time a "little" more glass was removed
    and I just didn't want to spend another 2 hours on this so I was done.
    You can't even notice the scratch anymore
    I had a very hard time getting these after shots.

    Before


    After


    Micro Before


    Micro After


    Can't even see it in this shoot in bright So. OC sun!


    You can just make it out in this one, it's 95% gone, but in person you don't even notice it


    Conclusion:
    You can remove scratches from glass.
    You must be patient though, I polished my windshield about 3 hours actual hours
    The door for an hour and a half.
    Also makes a big mess so prepping the area is crucial!

    The LC-GPS system is around $35 buck
    The Cerium Oxide is $15 bucks
    So compared to a new windshield installed around $250 bucks and a door window for $250 = $500 bucks?
    It's SOOOOOOO WORTH It!


    Thanks for reading and I hope I helped you in some way.

    P.S. If anyone knows where to get some leather pads, I'd be interested in buying them.

  • #2
    Re: Scratched Glass Solution - Cerium Oxide

    That is a great write up and so informative. I am glad that the cerium oxide worked so well for you.

    Congrats.
    quality creates its own demand

    Comment


    • #3
      Re: Scratched Glass Solution - Cerium Oxide

      Sweet!! Good writeup Mario

      Does your batch of cerium oxide smells funny?
      Learning new things everyday

      Comment


      • #4
        Re: Scratched Glass Solution - Cerium Oxide

        Mario,

        I've read in other posts that you have to be very careful when polishing glass to avoid changing the optics. I noticed that you only did a strip of your side glass - can you see any change in the clarity of the glass?

        I have some scratches in my side windows that I didn't see until I had the windows tinted and now they drive me nuts - this could be the solution!

        Comment


        • #5
          Re: Scratched Glass Solution - Cerium Oxide

          That was an excellent write up, thanks for sharing that!

          Comment


          • #6
            Re: Scratched Glass Solution - Cerium Oxide

            excellent write up Mario, polishing glass is your specialty now.
            Nick
            Tucker's Detailing Services
            815-954-0773
            2012 Ford Transit Connect

            Comment


            • #7
              Re: Scratched Glass Solution - Cerium Oxide

              Mario, your persistence paid off. You have demonstrated that when you are determined to get something done right, you WILL find the solution and you have in this case. Good for you!

              Comment


              • #8
                Re: Scratched Glass Solution - Cerium Oxide

                Glad to see it worked for you. Between your wetsanding prowess, polishing WWII bombers, and now your new skills in windshield correction, you are rapidly becoming MOL's Swiss Army Knife member!

                Comment


                • #9
                  Re: Scratched Glass Solution - Cerium Oxide

                  Originally posted by TimG View Post
                  Sweet!! Good writeup Mario

                  Does your batch of cerium oxide smells funny?
                  No, no smell at all

                  Originally posted by ClearlyCoated View Post
                  Glad to see it worked for you. Between your wetsanding prowess, polishing WWII bombers, and now your new skills in windshield correction, you are rapidly becoming MOL's Swiss Army Knife member!
                  Well you don't even know the half of it!
                  Next time I see you, hopefully, I'll tell you what my superior future holds!
                  Originally posted by wyseilmykkar View Post
                  Mario,

                  I've read in other posts that you have to be very careful when polishing glass to avoid changing the optics. I noticed that you only did a strip of your side glass - can you see any change in the clarity of the glass?

                  I have some scratches in my side windows that I didn't see until I had the windows tinted and now they drive me nuts - this could be the solution!
                  No optical change what so ever!
                  The Glazers I talked to said there would be, but as a Mike said "You'd have to remove allot of glass to do that" and I can't see any optical change.

                  Also I only used the side of the pad for the door, it's curved and I couldn't keep the pad flat anyways.
                  So I expected some optical change but there isn't any.
                  I plan on doing the entire windshield so we'll see.

                  So I'd say get the GPS and try it out, but make sure you don't let it dry out, spray with DW water. You will see a difference after an hour or so!

                  Comment


                  • #10
                    Re: Scratched Glass Solution - Cerium Oxide

                    Great work Mario!

                    Thanks for the update.
                    Paul Marmarinos
                    Flawless Prestige Car Detailing
                    "The trouble with the world is that everyone's about three drinks behind" - Humphrey Bogart

                    Comment


                    • #11
                      Re: Scratched Glass Solution - Cerium Oxide

                      Good job Mario!

                      Way to stick with it until you found a solution!!

                      Mike
                      Why do we drive on a Parkway, and park on a Driveway

                      George Carlin

                      Comment


                      • #12
                        Re: Scratched Glass Solution - Cerium Oxide

                        Nice work Mario!

                        Mike Phillips
                        760-515-0444
                        showcargarage@gmail.com

                        "Find something you like and use it often"

                        Comment


                        • #13
                          Re: Scratched Glass Solution - Cerium Oxide

                          Originally posted by Maserati Mario View Post
                          P.S. If anyone knows where to get some leather pads, I'd be interested in buying them.
                          Lapidary Machines

                          Comment


                          • #14
                            Re: Scratched Glass Solution - Cerium Oxide

                            Originally posted by joncz View Post
                            du, I should have checked there!
                            Thanks!

                            Comment


                            • #15
                              Re: Scratched Glass Solution - Cerium Oxide

                              Great scratch repair write up.

                              I think using a larger polisher could be why it took much longer to polish out the scratches. I have been using a Dremel Moto-Tool with a hard felt bob in 3/16 inch diameter for windshield wiper trails with great success. They are spinning at 18,000rpm. And for larger areas I use a hard felt bob in a drill motor at 6400rpm. It is 2" diameter. Both of those bobs produce a more concentrated pressure. And I have never had a heating problem either one.
                              And I don't think that I have ever spent more than 30 minutes on a scratch.

                              Comment

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