PPCJ’s regular columnist, Kevin Biller AKA Joe Powder, answers readers questions on all things powder coatings Hi Joe, Paging Joe. Local architect here. Fan of your Joe Powder column. Question for you. We are having a custom steel door (and surround) fabricated for our office. The door sits on 4th Street and as such, will … Continue reading Ask Joe Powder December 2023: Steel doors and crime scene fingerprint powder