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Technical Using “3M EZ sand 5887” on plastic parts

Discussion in 'The Hokey Ass Message Board' started by SlowRolling, Mar 15, 2023.

  1. SlowRolling
    Joined: Nov 5, 2019
    Posts: 5


    I used the 3M body panel adhesive/epoxy and was very impressed.

    I’ve got 3 plastic bumper covers and a plastic rocker panel that are all scratched and gouged up pretty bad that I want to fill and sand smooth. I bought a tube of the 3M Ez Sand Multi Purpose Repair Material 5887.

    My question is, do I have to remove all the paint wherever this 3M epoxy glue is applied. I do use adhesive promoter.
    Some of the gouges are deep and I’d rather not sand away the surrounding plastic so as to get into the bottom of the scratches and remove the paint. I was thinking I might use paint chemical paint stripper if the paint needs to all be removed.

    Thanks !

  2. Ned Ludd
    Joined: May 15, 2009
    Posts: 4,733

    Ned Ludd

    I prefer stuff to bolt together, as a matter of principle, to the point of breaking open glued joints quite savagely in order to do a bolted junction instead.
  3. BJR
    Joined: Mar 11, 2005
    Posts: 8,580


    I don't believe Hamb friendly cars have plastic bumper covers or much plastic anywhere for that matter.
  4. metlmunchr
    Joined: Jan 16, 2010
    Posts: 848


    Suggest you post this question at Bunch of guys there who make these sorts of repairs regularly and can give you accurate advice as to what materials and procedures will and won't work for a successful repair.
    loudbang likes this.

  5. Budget36
    Joined: Nov 29, 2014
    Posts: 11,504


    I think he’s just filling in scratches.
  6. indyjps
    Joined: Feb 21, 2007
    Posts: 5,349


    This thread will get closed soon.

    Why not prep the area the best you can ? Sand the paint off the area, heavy grit scuff on the area you're applying the 3M
    clem likes this.
  7. Dan Timberlake
    Joined: Apr 28, 2010
    Posts: 1,467

    Dan Timberlake

  8. Collision tech here...I would not use chemical stripper on plastic parts. Should be able to fold sandpaper and use edge to get in bottom of gouge. Adhesion promoter a must, or the 5887 will lift.
    clem likes this.
  9. hemihotrod66
    Joined: May 5, 2019
    Posts: 902


    Really alot of HAMB friendly gassers have one piece plastic front ends...
    alanp561 likes this.
  10. BJR
    Joined: Mar 11, 2005
    Posts: 8,580


    Arn't they fiberglass?
    Lloyd's paint & glass and clem like this.
  11. Yep, FRP. Fiber Reinforced Plastic

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