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Comments & Questions

Spray School Schedule

2008

Pinholes Or Bubbling

 

 

CAUSE

REMEDY
A Drafts which cause surface drying before the solvent can break through the surface film in order to evaporate. Find source of drafts. Open windows, doors etc.
B Fine drops of moisture coming through "separator" in spray apparatus. Clean spraying equipment.
C Air trapped in open pores of wood such as red oak. Spray a thin wash coat as first coat, or add retarder to finish.
D Fine bubbles after force drying. Be sure adequate solvent flash off time is used before putting the finished part in oven.

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