Urethane Bumper Stripping am I doing this wrong

Discussion in 'Body Restoration' started by RickM, Jun 13, 2018.

  1. RickM

    RickM Veteran Member

    Apr 16, 2004
    Gaithersburg, MD
    Ok getting my car ready for paint, I am going to hire a painter.

    I am working on the urethane bumpers.

    I have stripped off the clear using an orbital sander, then I have hand sanded using 220.

    The bumper is in good shape only a few very minor very shallow dings.

    When do I stop sanding?
    I have cut all the way through the primer in a couple of spots.
    Is it really necessary do remove all of the paint and get all the way down to the primer?

    Here is where I am



    I am using this to fix the minor dings

    Any thoughts?

  2. Twisted_Metal

    Twisted_Metal Administrator Staff Member Lifetime Gold Member

    Feb 26, 2004
    Bloomington, MN
    IMO, Stop right where you are.
    Fix the dings and seal it with epoxy primer.
  3. jimrr

    jimrr Veteran Member

    Jun 12, 2016
    times 2 ^^^^
  4. Huggerorange80

    Huggerorange80 Member

    May 19, 2018
    Personally I don't think the epoxy primer is the way to go here.

    I would clean it off really good, use a little adhesion promoter, and then spray a few coats of high build urethane primer with a flex additive.

    With a thick coating of primer you may only need very very thin applications of filler to fix your issues. I would consider using fiberglass since it tends to be more flexible, though it's a bitch to sand.
  5. RickM

    RickM Veteran Member

    Apr 16, 2004
    Gaithersburg, MD
    Thanks for the help guys.

    I am not laying down one speck of paint since I don't have the necessary equipment (Compressor, Respiratior, Spray Booth, etc, etc).

    Plus I live in a residential neighborhood, not the best place to be spraying paint with all of its hazardous properties.

    I am just prepping the car the best that I can before I hand it off to a painter.

    I know it wont be cheap but there should be little to no body work when I hand it off.

  6. Huggerorange80

    Huggerorange80 Member

    May 19, 2018
    Have you talked to a painter about what you're doing? A lot of body shops will not warranty paint over somebody else's body work.
  7. Coadster32

    Coadster32 Veteran Member Lifetime Gold Member

    Oct 2, 2013
    My opinion....If you're not going to lay any paint what-so ever, let him prep it the way he wants. You've saved him alot of time already, which is what your goal was.

    I agree with the paint warrenty issue Huggerorange80 mentioned.
  8. xten

    xten Veteran Member

    Sep 24, 2014
    Pittsburgh, Pa.
    Stop where you are, as Terry said. Take it to the painter, or send him pics. Ask him what he wants you to do. We all have different techniques. Let him make the call. That way if anything happens, it was his system that failed, and it won't be on you.

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