Self Etching Primer

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The key to getting paint to stick well to bare metal is all in the metal prep and using the right primers. Self etching primer contains a mild acid that actually etches the bare metal to create a superior bond between the primer and the metal. Once the area is coated in self etching primer more traditional primers can be used to build out the surface.

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4 Responses to “Self Etching Primer”
  1. Rick

    Mark, I’ve got some bare metal panels that I’ve been working on but won’t actually get to base coat painting for quite some time (probably months or up to a year). Is the self etching primer something I can spray on to protect it from rust and leave it until I’m finally ready down the road to apply the high build primer?

    Reply
    • Customer Service

      Hello Rick,

      Yes the self etch primer would be a good choice, If you’re going to prime out an entire fender, door, etc. another good choice would be to spray it with a two-part epoxy primer.

      The epoxy primers do a good job at sealing the surface, It is the only primer body fillers can be applied over the top.
      My general rule of thumb is, If the area to be primed is over a couple feet square, I prefer to mix up some epoxy primer for bare metal.

      It’s also important to remember that no primer is meant to be a top coat and they lack any real UV resistance.
      If your car is going to be outside during the restoration process you may need to re-coat some of your primed areas.

      Hope this helps,

      Mark
      Classic Car Restoration Club Video Membership

      Reply
  2. bloodybill

    Is it better to apply body filler before or after self etching primer? Will self etching primer work correctly over body filler?

    Reply
    • Customer Service

      Hello,

      I do not recommend using body filler with self etch primer. I only use self etch on bare metals. If you plan to do body work after priming, epoxy primers are a better choice.

      Hope this helps,

      Mark
      Classic Car Restoration Club Video Membership

      Reply

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