| Definition |
 |
Crater-like indentations
with raised edges. |
| |
|
| Cause |
|
Substrate was not thoroughly
cleaned with silicone remover. |
|
Air supply was contaminated
with oil or water (defective oil and water
separator in air line). |
| |
|
| Prevention |
|
Thoroughly clean the substrate
with silicone remover. |
|
Ensure that regular maintenance
is carried out on the compressed air lines. |
| |
|
| Remedy |
|
Allow to dry and then sand
out the craters. |
|
Clean the whole surface
and apply another coat of surfacer. |
