Out-Gass Builder Primer This primer addresses out-gassing issues common with aluminum and cast metals. Its high-build characteristics enable it to be used as a building/filling material as well, like a Bondo for Powder Coating. This is an ideal universal primer. It shoots and coats like other powders. Adding a priming step to your process can help defeat problems with adhesion, poor surface quality, uneven surfaces, and orange peel. Application...