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Paint Defects
MOTTLING  
Mottling, shadowing, flooding, muttling, floating, misting, chalking, precipitation, blooming, bloom, bleaching.  
DESCRIPTION
Occurs only in metallics when the flakes float together to form spotty or striped appearance.

CAUSES/ORIGIN
1. Wrong thinner or reducer.
2. Materials not uniformly mixed.
3. Spraying too wet.
4. Holding spray gun too close to work.
5. Uneven spray pattern.
6. Low shop temperature.
7. The flash off of the basecoat was too short before the clearcoat was applied.
8. Coat affected by wet or humid air/weather.
9. Coat too heavy.
PREVENTION
1. Select the thinner or reducer that is suitable for existing shop conditions and mix properly. (In cold, damp weather use a faster-dry solvent.)
2. Stir all pigmented topcoats - especially metallics - thoroughly.
3. Use proper gun adjustments, techniques, and air pressure.
4. Keep your spray gun clean (especially the needle fluid tip and air cap) and in good working condition.
5. Do not spray the metallic basecoat too wet.

SOLUTION
Allow colour coat to set-up and apply a drier double coat or two single coats, depending upon which topcoat you are applying.
If the defect is only visible after the application of the clear, dry the clear, sand it and re-apply basecoat and clearcoat.

PRODUCED DUE TO/OR DURING
APPLICATION
HUMIDITY
Acid Rain
Bird Droppings
Bleeding
Blistering
Boiling
Chipping
Corrosion
Cracking
Dirt
Dissolution
Dry Spray
Featheredge Splitting
Fish Eyes
Flexibility
Lifting
Mottling
Orange Peel
Overspray
Peeling
Pinholing
Poor Hiding
Runs
Sandscratch Swelling
Scratches
Slow Drying
Water Spotting
Wrong Colour
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