Chuck, Runs may be a part of the learning curve but not a part of everyday painting...certainly by a pro. The trick is to know when the coating will run amd stop just before that point. I found that it is easier to do this when using quality waterborne coatings...my favorite Target Coatings and not to thin it more than what they recommend (10%) and to thin with their retardent and not water. Keep a clean rags available and start spraying. You always want a wet edge and to work new spraying into this edge. Use a side light to help show the wet coating. Then, practice, practice, practice.
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20 years ago