Tamco

Tamco

Saturday, September 26, 2009

FISHEYES

(Silicone Contamination, Cratering) 
Small circular, crater-like openings that appear during or shortly after the spray application.


CAUSE
(A) Spraying over surfaces contaminated with oil, wax, silicone, grease, etc.
(B) Use of thinner/reducer in place of a solvent cleaner.
(C) Spraying over previously repaired areas containing "fisheye eliminator" additive.

REPAIR
(1) Remove wet paint film with solvent, clean and refinish.
(2) Add the recommended fisheye eliminator and respray the affected area.
(3) If fisheyes appear in a basecoat, allow the color to flash then spray a mist coat over affected area. Do not use fisheye eliminator in undercoats or basecoat color.
(4) If the paint has dried, sand to a smooth finish below the fisheye cratering and refinish.

PREVENTION
(A) Thoroughly clean the surface to be painted with detergent and hot water, followed by the recommended solvent cleaner. Wipe dry with clean rags.
(B) Use fisheye eliminator that is specifically recommended for the topcoat.
(C) Install an air filtering system that removes and prevents oil and moisture contamination.
(D) Maintain air supply by draining, cleaning and changing filter(s) on a routine basis

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