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Hard Water Leaving Water Spots on Model

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  • Member since
    July, 2003
  • From: Chicago, USA
Hard Water Leaving Water Spots on Model
Posted by MonsterZero on Monday, December 25, 2017 9:57 AM

If I need to wash the model with soap and water prior to painting, what do you think I should do about hard water leaving stains on the model?

How about a final dip in distilled water just before I dry the model?

  • Member since
    March, 2003
  • From: Northern New Jersey
Posted by Tojo72 on Monday, December 25, 2017 10:32 AM
Hard water spots on the bare plastic before painting ? If that’s what’s happening,I would think the primer and paint would cover it.

  • Member since
    July, 2003
  • From: Chicago, USA
Posted by MonsterZero on Monday, December 25, 2017 11:50 AM

No, spots on painted model. Sometimes I wash it again after painting, if I feel like it gets dusty or greasy from fingerprints.

  • Member since
    November, 2009
  • From: Twin Cities of Minnesota
Posted by Don Stauffer on Tuesday, December 26, 2017 9:34 AM

I would think it would have to be really hard water to leave visible spots.  However, after washing model I usually do a final wipe with rubbing (isopropyl) alcohol.  Now, the more concentrated mixes of that stuff can take off acrylics, but it is fine for lacquers and enamels.  For acrylics, you'd want to use the weakest stuff your drugstore carries, and let that acrylic set up well for a couple of days- I'd even test a sample of your paint dried for awhile before using alcohol on it.  Even with enamels and lacquers I do not douse the model with alcohol, merely dampen a fine cloth and do a quick once over.  I find this takes any dust, residue, or fingerprint oil off that plain water doesn't.

 

Don Stauffer in Minnesota

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