I have no experience using paint spray guns, but thought I would give it a try applying primer on my fiberglass parts after tediously filling pin holes and sanding for what seems like forever. I followed the directions that came with the spray gun, which is a siphon cup type unit that I hooked up to my cheapo Craftsman air compressor. I practiced by spraying water on the hangar wall until I thought I had the hang of it, then disassembled the gun and dried it out. The next morning I mixed up the two-part primer (Eurofill from Evercoat) and gave it a shot.
Everything went great at first. I was amazed how smooth the first coat went on my wheel pants and I actually started having thoughts that I could eventually paint my own plane. But somewhere in the middle of my second coat things went to heck - not smooth at all. It looked like I had sprayed the dust from a pencil eraser all over. I stopped, dissassembled the gun and cleaned it all out. Started again on some new parts and got the same result - worked great for awhile and then got the eraser dust affect.
Nothing too tramatic here because the primer sands down really easily and nicely, but I dont want to do more until I understand whats going on. My guess is something pretty simple, and I dont think its the primer product - the part I got right was really nice.
Whats the deal?
thanks
Erich
Everything went great at first. I was amazed how smooth the first coat went on my wheel pants and I actually started having thoughts that I could eventually paint my own plane. But somewhere in the middle of my second coat things went to heck - not smooth at all. It looked like I had sprayed the dust from a pencil eraser all over. I stopped, dissassembled the gun and cleaned it all out. Started again on some new parts and got the same result - worked great for awhile and then got the eraser dust affect.
Nothing too tramatic here because the primer sands down really easily and nicely, but I dont want to do more until I understand whats going on. My guess is something pretty simple, and I dont think its the primer product - the part I got right was really nice.
Whats the deal?
thanks
Erich