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First Time Wet Sanding

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  • First Time Wet Sanding

    Hi all,

    First time poster here and about to attempt my first repair.

    I have applied some touch up paint to a small area and i am looking to smooth it over and make it less noticeable.

    My current plan is to wet sand after a week of leaving the paint to cure.

    I'm going to sand using 3000 grit paper and the pencil eraser trick. I've also bought some Scratch-X 2.0 that I will apply with a Meguiars DA Power System with a Dewalt DC725 18v Cordless Combi Hammer Drill.

    I'm looking for any suggestions that can make this look as inconspicuous as possible and also if I should take any steps after the Scratch-X

    Any help is appreciated

    Bob

    I have uppploaded a few images on Imguir of the current state: https://imgur.com/a/ikha7uC

    Last edited by billybob1987; Jul 23, 2018, 10:29 AM. Reason: update link

  • #2
    Re: First Time Wet Sanding

    Welcome to Meguiar's Online!

    We should be able to share some tips with you here, but in general, this can be a tough/dangerous project. From the looks of your picture, the second/larger area you have applied touch up paint to is right up to an edge. I would not sand directly on the edge.

    I am not familiar with the "pencil eraser trick." Can you please further explain this technique?

    So Meguiar's Scratch X 2.0 & our DA Power System is not necessarily designed to remove actual sanding marks. Although, I suppose you should be able to remove 3000 grit with our DA Power System & a Compounding Pad, but if you are not able to easily remove them after a couple attempts, it would be best to look to a different liquid, like our M105 Ultra Cut Compound, and possibly a different machine.

    Which specific brand of "3000 grit" are you using? Not all sandpaper is created equal. Is it a paper or a "foam backed disc"?

    Nick
    Nick Winn
    Product & Training Specialist | Meguiar's Online Forum Administrator
    Meguiar's Inc.
    Irvine, CA
    nawinn@meguiars.com

    Comment


    • #3
      Re: First Time Wet Sanding

      Originally posted by Nick Winn View Post
      Welcome to Meguiar's Online!

      We should be able to share some tips with you here, but in general, this can be a tough/dangerous project. From the looks of your picture, the second/larger area you have applied touch up paint to is right up to an edge. I would not sand directly on the edge.

      I am not familiar with the "pencil eraser trick." Can you please further explain this technique?

      So Meguiar's Scratch X 2.0 & our DA Power System is not necessarily designed to remove actual sanding marks. Although, I suppose you should be able to remove 3000 grit with our DA Power System & a Compounding Pad, but if you are not able to easily remove them after a couple attempts, it would be best to look to a different liquid, like our M105 Ultra Cut Compound, and possibly a different machine.

      Which specific brand of "3000 grit" are you using? Not all sandpaper is created equal. Is it a paper or a "foam backed disc"?

      Nick

      Hi Nick,

      Thanks for the reply!

      The pencil eraser trick is where you glue a 'hole-punched' amount of sandpaper to the eraser. This means you have a smaller surface area to work with avoiding unnecessary cutting of paint. I am hoping by using this method I can sand away from the edge you have mentioned.

      The DA seems to have come with x3 polishing pads, I take it these are no good. Am I correcting in thinking I need the red pads? What other machine would you recommend on a tight budget?

      The sand paper I have is non-branded but is silicon backed and electro covered.

      Hopefully this info can point me further in the right direction!

      Thanks again.

      Bob

      Comment


      • #4
        Re: First Time Wet Sanding

        I used the pencil eraser trick....works well. I have small erasers and then the triangle ones which are larger.
        Check out this hi-tech sand paper: https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
        To remove sand scratches even at 1500, I've found that M-85 polish, followed by ScratchX 2.0 is a great combination.
        Finish up with M-105 and M-205.
        2014 Porsche 981 Boxster - Black Basalt Metallic; 21" wheels with oversized Toyo T1R racing tires.

        Comment


        • #5
          Re: First Time Wet Sanding

          Originally posted by syswizard View Post
          I used the pencil eraser trick....works well. I have small erasers and then the triangle ones which are larger.
          Check out this hi-tech sand paper: https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
          To remove sand scratches even at 1500, I've found that M-85 polish, followed by ScratchX 2.0 is a great combination.
          Finish up with M-105 and M-205.
          Do you have any tips for using the eraser on my touch up? Should I spin the pencil or go in straight lines?

          Bob

          Comment


          • #6
            Re: First Time Wet Sanding

            Also, what pads should i use?

            Scratch-X - Compound
            M105 - Compound or Polish
            M-205 - Polish

            Comment


            • #7
              Re: First Time Wet Sanding

              Originally posted by billybob1987 View Post
              Do you have any tips for using the eraser on my touch up? Should I spin the pencil or go in straight lines?
              Bob
              Yep, for small nicks, just twirl the round eraser tip. That minimizes the loss of clear coat.
              2014 Porsche 981 Boxster - Black Basalt Metallic; 21" wheels with oversized Toyo T1R racing tires.

              Comment


              • #8
                Re: First Time Wet Sanding

                After sanding down and using scratch-x I got this result: http://imgur.com/lFSDJ7g

                Is there a polish I can use to make the discolouration less obvious?

                Comment


                • #9
                  Re: First Time Wet Sanding

                  After wet sanding and using Scratch-x I've got this result: http://imgur.com/lFSDJ7g

                  What can I do to make the colour discolouration less obvious?

                  Comment


                  • #10
                    Re: First Time Wet Sanding

                    I have now wet sanded the paint and used scratch-x. Although the sanding scratches have gone, the colour of the touch up does not match as well. Is there a way I can blend it in more?

                    I did try a post an image but it hasn't been approved yet.

                    Bob

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