Tiny Burn Throughs-Do I Need to Epoxy Prime?

Discussion in 'Body Restoration' started by MotionClone, Mar 8, 2015.

  1. MotionClone

    MotionClone Veteran Member

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    After sanding most of the Slick Sand off I ended up with a handful of burn throughs down to bare metal. The largest spot is about an inch long and 1/8" wide.

    Do I need to epoxy prime these spots or will my next step of primer/surfacer be sufficient?

    Couple spots to the right of rear marker light:
    [​IMG]
     
  2. 76_TypeLT

    76_TypeLT Veteran Member Lifetime Gold Member

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    being an 1" long I would re-spray with epoxy primer to be safe. I had the same thing happen but the spots were less than a pencil eraser and Barry @ SPI said I could just spray 2k over those. If it was me I'd go ahead and do one coat of epoxy primer and then do 2k over that. But I am more risk averse than most people.
     
  3. MotionClone

    MotionClone Veteran Member

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    lol thought thats what you would say. I have no problem spot priming the bare spots. Its the additional sanding to feather those spot primes out I was hoping to avoid. I probably have 15 or so spots like the ones pictured.

    Im out of SPI and now using Omni Epoxy which doesnt sand as well at all
     
  4. Rick WI

    Rick WI Veteran Member

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    Rule of thumb I use is if bigger than a quarter I spot with epoxy. If not primer surfacer.
     
  5. Rustbucket350

    Rustbucket350 Veteran Member

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    You could always use a DTM urethane primer.
     
  6. Paint Fumes

    Paint Fumes Veteran Member

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    Rick beat me to it but this is what I go with too.
     
  7. stevenp3762

    stevenp3762 BANNED

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    Surface prime it and move forward.
     
  8. 76_TypeLT

    76_TypeLT Veteran Member Lifetime Gold Member

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    bigger than a quarter in which direction? It's spots like OP's that would throw me off since they are relatively large in one direction but not the other. Know what I'm saying?
     
  9. Rick WI

    Rick WI Veteran Member

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    Surface area is what you gauge. Those spots can be primered. It will bridge without an issue.
     
  10. phat80

    phat80 Veteran Member

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    collision blast

    Go to the Collision Blast DIY site. Donny just did a vid on epoxy vs S/P

    He is emphatic that S/P is not a substitute for epoxy primer and that moisture will penetrate S/P and eventually bubbles will appear.

    But hey! What do I know?
     

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