Collision Blast - Paint Defects and Other Considerations

1. If stripping a panel to metal is required, using 36 - 80 grit on a (DA) sander is one method that could be used.

True

False

2. Mottling can be caused by applying the clear coat too soon.

True

False

3. What is the Most likely cause the paint is peeling.

Oxidation.

Never washing the car.

Loss of adhesion.

Factory defect.

4. One method to prepare the metal for top coating is to apply epoxy primer straight over the bare metal.

True

False

5. According to the pdf file, one way to eliminate edge marking is to ensure drying times are observed. Infra Red drying reduces the chances of edge marking by drying the lower layers first.

Paint Defects

True

False

6. What is the best way to assure that the paint job does not have fisheyes when painting?

Final Sanding

Color Sanding

Proper Cleaning

Proper Masking

7. Metallics striping or streaking may be caused by applying the base coat too wet.

True

False

8. When the paint coating are too thick, the surface must be partially or fully stripped. What is considered too thick.

The paint should always be stripped to the metal when refinishing.

1/4" inch

6 mills

13 mills

9. After the car was painted, tiny pin holes appeared in the paint. What is this called.

Pin holes.

Lifting

Solvent Pop

Checking.

10. It may be possible to use a razor blade to remove paint coatings.

True

False

11. Lifting is caused by spraying the coating too dry.

True

False

12. Heavy orange peel can usually be repaired without repainted the surface.

True

False

13. Checking is a paint defect where you can see through the painted surface.

True

False

14. Chipping paint is always the result of adhesion loss.

True

False

15. If restoring a complete car that has rust, what would be the best way to strip the car to metal?

Use a DA sander with 36 grit followed by 80 grit to minimize the 36 grit scratches.

Media Blast

Chemical Strippers

Just final sand and paint.

16. Being rushed by the customer, a painter rushes the primer by applying 4 full wet coats back to back. What problem do you think this may lead to.

No problem, customers come first.

Sand scratch swelling.

Excessive dirt.

Dry finish when painted.

17. A painted surface has excessive orange peel. What may be the cause of this.

Air pressure too high.

Gun travel too fast.

Gun distance too far.

Incorrect Gun angle

18. To prepare a car for paint, we need to properly clean and final sand. However, there are a few paint defects that will require additional steps, which include all of the following Except:

Peeling

Mottling

Paint measures 14 mils thick.

Checking

Collision Blast - Paint Defects and Other Considerations

1. If stripping a panel to metal is required, using 36 - 80 grit on a (DA) sander is one method that could be used.

2.

What first name or nickname would you like us to use?

2. Mottling can be caused by applying the clear coat too soon.

3. What is the Most likely cause the paint is peeling.

4. One method to prepare the metal for top coating is to apply epoxy primer straight over the bare metal.

5. According to the pdf file, one way to eliminate edge marking is to ensure drying times are observed. Infra Red drying reduces the chances of edge marking by drying the lower layers first. Paint Defects

6. What is the best way to assure that the paint job does not have fisheyes when painting?

7. Metallics striping or streaking may be caused by applying the base coat too wet.

8. When the paint coating are too thick, the surface must be partially or fully stripped. What is considered too thick.

9. After the car was painted, tiny pin holes appeared in the paint. What is this called.

10. It may be possible to use a razor blade to remove paint coatings.

11. Lifting is caused by spraying the coating too dry.

12. Heavy orange peel can usually be repaired without repainted the surface.

13. Checking is a paint defect where you can see through the painted surface.

14. Chipping paint is always the result of adhesion loss.

15. If restoring a complete car that has rust, what would be the best way to strip the car to metal?

16. Being rushed by the customer, a painter rushes the primer by applying 4 full wet coats back to back. What problem do you think this may lead to.

17. A painted surface has excessive orange peel. What may be the cause of this.

18. To prepare a car for paint, we need to properly clean and final sand. However, there are a few paint defects that will require additional steps, which include all of the following Except:

5. According to the pdf file, one way to eliminate edge marking is to ensure drying times are observed. Infra Red drying reduces the chances of edge marking by drying the lower layers first.

Paint Defects