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Comments & Questions

Spray School Schedule

2008

Blushing

 

 

CAUSE

REMEDY
A

A combination of factors tend to cause blushing. Likewise, a combination of factors may be used to remedy the difficulties.

  • Humid weather

  • Drafts Poor thinner (too hot)

  • Lacquer sprayed when cold

  • Damp spray rooms (generally concrete floor at ground level)

  • Moisture in spray equipment

Add up to 13 oz, per gallon of a slow evaporating lacquer reducer like M.L. Campbell C161 1 Lacquer Retarder. Retarder should always be added to solvent lacquers when humidity is over 50%.

  • Humid weather: add retarder to thinner or use a higher quality thinner. For drafts, find source.

  • Bring the lacquer to room temperature.

  • Blushing caused by condensation of water and subsequent evaporation from cold spray rooms can be avoided by warming up the room.

  • Film has a white haze in areas. The film has dried too fast and entrapped

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