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Review on πŸ”« Efficient Coating with Astro 4538 Economy Air Undercoat Gun by Doug Hinrichsen

Revainrating 5 out of 5

I used it to paint the bottom of a trailer.

Used to spray the underside of my car trailer with 3M 08864 Body Protection Rubberized Coating Black. The key to spraying this substance is a very good mix. The first time I didn't, it jammed the gun. I also thinned it by topping up the bottles with lacquer thinner, although I don't think it was needed for the gun. Even diluted, I couldn't get it to spray out of this gun with the 3M primer hose attached. He went about 1/2 up the pipe and then pounded it.

Pros
  • Sturdy construction
Cons
  • Some cons