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Discussion Starter · #1 ·
Just recently painted a 85 c10.. Used single stage got it painted looked real good inside backed it out and in certain light can see imperfections under the base from where I feathered out places in old paint. Look at it one way straight as can be look at it a different angle can see places in it.. primed it and blocked the whole truck down before Painting didn’t see any bad areas once blocked down. Primer shrink? Could places been that small and missed them then the dark color show them up? Not really sure what happened
 

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I learned to spray some cheap rattle can primer or just wal mart flat black on areas like that, then block it. The imperfections will show if your block is big enough. Yes, you missed them.
 

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True Hotrodder
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Like Tony mentioned if you don't put something on it to show your progress knocking down the primer, then it's real easy to miss stuff. I also know that a lot of people that "want" to block out the panels miss a couple of things. One is making sure that all the body work areas are completely done, primered, guide coated, blocked and then primed again - before you squirt a few coats of primer on the entire vehicle to block the rest of it. And if you come up on something when blocking, then yep you gotta stop and get that area straight before moving on. More than once I have had someone tell me, yep I saw that spot and meant to go back to it - but it never happened. And when putting the primer on for blocking - several coats, medium wet is what you want. You need material to work with and lastly - wait. Let the primer shrink as long as you can stand it - newer stuff is better but waiting doesn't hurt a bit.
 

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Discussion Starter · #4 ·
I used guide coat on the primer got it all blocked out.. the first day had truck outside couldn’t see any places in it at all pulled it back in put another coat of base on just the bed truck sat inside for another week pulled back out yesterday and noticed the places..
 

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True Hotrodder
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I used guide coat on the primer got it all blocked out.. the first day had truck outside couldn’t see any places in it at all pulled it back in put another coat of base on just the bed truck sat inside for another week pulled back out yesterday and noticed the places..

Sounds like shrinkage in the primer, you did recoat after finishing the blocking? And the C-10, is that one of the fleetside styles? I was just looking at a picture of one and that would take me the better part of a week to block out. Lot of sheetmetal there.
 

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Brian Martin,Freelance adviser
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Yeah, shrinkage can make a LOT happen for sure. If you applied the primer heavy to block out imperfections you could block those imperfections out and then the primer is now "open" so trapped solvents can escape and it can shrink down creating new imperfections.

This is the thing though, right now, blocking the whole thing and doing it over is of course a BIG job. You may want to think about putting it together and driving it with a smile on your face. There are two factors here, one, you are looking at ONLY the paint work, there are no bumpers and handles and all that on there to take our attention away from JUST the paint. So flaws in the paint stand out much more. Secondly, YOU know where these flaws are, others look at it and may very well not see them at all! So what you are seeing, no one else will and to others they will see a cool old truck.

So putting it together and driving it with a smile on your face may be an option.

Brian
 
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