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Has anyone else had problems with bondo

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  • Has anyone else had problems with bondo

    I am getting little tiny holes in my bondo. I have tried filling them in with more bondo and then resanding the surface and I always end up getting some little holes. Has anyone else had this problem? Is there any solution? I'll try to post some pics later

  • #2
    primer?
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    • #3
      primer would help but your problem is bondo brand body filler
      Brian @Nexations Creations

      Specialist in Custom Interior Fiberglass OEM Replication Work.

      AIM: Exus28
      E-Mail: Exus28@aol.com

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      • #4
        They are too deep for the primer to cover up

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        • #5
          Originally posted by Nexson View Post
          primer would help but your problem is bondo brand body filler
          bingo.. bondo's quality has dropped drastically. The last product i bought called bondo GOLD or somethin() worked about is well as regular bondo did 5 years ago.
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          • #6
            Hmmm maybe i'll try to get some bondo gold to fill in the gaps on the regular bondo?

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            • #7
              in my honest opinion i'd scrap bondo altogether and go with another brand name like duraglass for the bottom coats and RAGE xtreme for the top coats.. i believe that is what nexson uses and he's our resident professional
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              • #8
                err I would but its already pretty much finished with the bondo besides these little holes

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                • #9
                  finished aint finished until the screen is mounted to your bezel and reinstalled in the car assuring no bondo cracked in the process. Nothing worse than getting it smooth then pressing a bezel back in only to have the slightest flex crack thru the bondo. I've been there all too many times... never again! lol
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                  • #10
                    RAGE products > Bondo Products

                    If you were a bit earlier in the process, the milkshake method also helps a bit with the pin holes.
                    Play with it, 'til it's broke.

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                    • #11
                      Can't you just use regular filler/bondo to fill pinholes instead of a milkshake?

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                      • #12
                        Use Bondo Fiberglass Jelly resin, its alot harder than regular bondo, but from my experience it doesnt crack and you dont get the pinholes. The only drawback is you have to sand the crap out of it when its fully cured. Another solution is to get a tube of filler putty, apply it and sand with 200+grit, prime and sand again.
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                        • #13
                          with all due respect, fiberglass jelly is not what he needs.

                          Please post pictures so we can better assist you.

                          Originally posted by Sonicxtacy02 View Post
                          in my honest opinion i'd scrap bondo altogether and go with another brand name like duraglass for the bottom coats and RAGE xtreme for the top coats.. i believe that is what nexson uses and he's our resident professional
                          thanks!!!
                          Brian @Nexations Creations

                          Specialist in Custom Interior Fiberglass OEM Replication Work.

                          AIM: Exus28
                          E-Mail: Exus28@aol.com

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                          • #14
                            The problem is not in the material itself, it is in the way you are mixing and applying it. The holes are caused by small air pockets. This can be caused by either too "hot" a mix (too much hardener so it cures too rapidly) or simply because of the way you are mixing it. You don't "stir" the hardener into the bondo, you spread it, like putting butter on bread, back and forth, switch direction, going repeatedly until you get it all mixed together and see the nice pinkish hue, and then spread the bondo onto your panels in thin, even strokes using a flexible plastic or rubber spreader. Let the first layer setup before lightly sanding and spreading another layer (don't mix too much and end up wasting it between layers, and don't mix too hot or it will set too fast, and as you try to spread bondo that is already "setting" it will stick/pull/clump).

                            I too prefer Rage fillers over "bondo", but for a budget project there is nothing wrong with a little bondo. The solution is in the PREP and application, not so much the material itself.

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                            • #15
                              Originally posted by SPElectronics View Post
                              The problem is not in the material itself, it is in the way you are mixing and applying it. The holes are caused by small air pockets. This can be caused by either too "hot" a mix (too much hardener so it cures too rapidly) or simply because of the way you are mixing it. You don't "stir" the hardener into the bondo, you spread it, like putting butter on bread, back and forth, switch direction, going repeatedly until you get it all mixed together and see the nice pinkish hue, and then spread the bondo onto your panels in thin, even strokes using a flexible plastic or rubber spreader. Let the first layer setup before lightly sanding and spreading another layer (don't mix too much and end up wasting it between layers, and don't mix too hot or it will set too fast, and as you try to spread bondo that is already "setting" it will stick/pull/clump).

                              I too prefer Rage fillers over "bondo", but for a budget project there is nothing wrong with a little bondo. The solution is in the PREP and application, not so much the material itself.


                              Correct, but even so rage products especially Xtreme spread virtually pinhole free. usually to an amatuer bondo brand can cause problems but of course for an amatuer, bondo brand is going to be the first of choice since it is locally avaiable to all.
                              Brian @Nexations Creations

                              Specialist in Custom Interior Fiberglass OEM Replication Work.

                              AIM: Exus28
                              E-Mail: Exus28@aol.com

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