April 29, 2007

General Material Problems:

1. Material is soft. It does not set up or sets up slowly:

-Resin is insufficiently mixed. Remember to purge unmixed material from the lines before starting to spray again.

2. Material Foams:

-There is moisture in the resin. Order a molecular sieve and add to it to the resin.

3. Color is Blotchy:

-Inadequate mixing of color in the resin.

4. Color is Translucent:

-Pigment concentration is too low.

5. Color blushes. It lightens when sprayed:

-Pigment concentration is too low.

-Or it’s sprayed too hot or too close to the substrate.

6. Tiny pinholes in surface of coating:

-Moisture in resin.

-Air bubbles in resin (mixed too vigorously).

Note: Be careful not to blend air into the material when the drum is less than half full.