Testors Videos Testors Airbrush Tips and Troubleshooting(1:36) Keeping your airbrush clean and free of clogs made easy with these four tips! Your next airbrush project will be quick and smooth once you have mastered these simple trouble shooting skills. Oil Dot Filter Weathering Paint Technique by Karl Logan (5:58) Karl Logan demonstrates the Oil Dot Filter Weathering Technique using Testors and Model Master products. Getting Started with your Testors Amazing Air or Snap and Spray Airbrush (1:46) The Testors Amazing Air and Snap and Spray Airbrush kits allow you to set up, spray, and clean up quickly and easily. This videos guide shows how to set your airbrush, change colors, and clean up your airbrush system.