Cover Small Bare Metal w/2K?

cmfisher4

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I'm (maybe) finished the metalwork/epoxy/filler/primer stages with my first panel (passenger's door; it was a steep learning curve). I finished up with three coats of 2K regular build primer and I'm happy with how straight it is. Unfortunately, during my final sanding, I found three small high spots, about the size of a quarter, where I got through to bare metal. It is acceptable to flatten those spots a bit and do another few coats of 2K to get those areas covered, or should I hit the entire door with 2 coats of epoxy again, then 2K? I'm not particularly concerned with imperfections as they are all on the bottom of the door and, give the size of the car (Triumph Spitfire), they would be very hard to see, but I am trying to do a proper job. Thanks!
 
It is hard to say without standing there looking at the door. It depends how hard you rubbed them through. Did you stop sanding as soon as you saw metal? Either way, you are going to need epoxy on the bare metal. You could spot it in, then spray 2k on the whole thing, if that's what you want to do. I'd probably just epoxy the whole door and sand that (to reduce the number of steps and mixing small batches).
 
According to Barry it’s done in collision work all the time but for restorations the bare metal should be covered with epoxy.

Don
 
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