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Question for those who use Kryon or automotive primers

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  • Member since
    November 2005
Question for those who use Kryon or automotive primers
Posted by Anonymous on Monday, October 30, 2006 7:16 AM

Hey ^_^  First post here.

I have a question about Kryon primer since I'm using it, but I figure any automotive primer or primer like Kryon would be able to answer my question.  I bought a can of the stuff last night, and decanted it into a little bottle and airbrushed it on my model.  The reason I decided to switch from Model Masters was that the model masters primer wasn't covering up the putty I put on my model.  I ould still see it, even after a few coats. 

I've sprayed teh Kryon on, and it went on smooth, but there's a bunch of little dried bumps all over it.  Like little clumps of dried paint.  Is this normal?  I plan to, either tomorrow night or the following night depending on how school and work leave me, to sand the pieces with with some 2000 grit (not a typo, I mean 2000, with three zeros) I picked up to get the bumps away.  Hope it works, but I'm open to tips and suggestions about using this stuff.  

 I'm spraying it at about 20-25 PSI from a distance of around six or seven inches from the piece.  I do four really quick passes, waiting a bit between each pass, then letting it dry for a couple of hours, then doing a few more quick passes.  

Thanks for any help! 

  • Member since
    January 2003
  • From: Peoples Socialist Democratic Republic of Illinois
Posted by Triarius on Monday, October 30, 2006 11:56 AM

While I don't approve of or condone the practice of decanting paint from aerosol cans (dangerous and unneccessary, IMEO), I think I know what your problem is.

The little lumps are either undispersed pigment, or blisters caused by trapped reducer and/or propellant. the latter is unlikely from the description of your spraying technique.

Before using, aerosol cans should be shaken continuously for at least three minutes. (Hey, it's good aerobic exercise!) If you have decanted the reduced paint from the can, the pigment will settle very rapidly because the paint has been reduced to spraying viscosity for a self contained aerosol delivery system (which is very different from an airbrush.)

Reduce your air pressure and get closer, too. 

Ross Martinek A little strangeness, now and then, is a good thing… Wink

  • Member since
    November 2005
Posted by Anonymous on Tuesday, October 31, 2006 12:16 AM
It seems I made a bit of a mistake.  I didn't need to sand the little bits off.  They were like little bits of dust that came off when I moved my finger across them :P  So I took an old brush and just brushed them off, leaving the smooth finish underneath.  Looks great now!
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