I'm really hoping someone has conquered this problem before and can clue me in. Here are the details:
I'm a retired electrical engineer with a project, a 67 GTO convertible on which I am attempting a frame-off resto. I have been following this forum for a few months and the SPI epoxy primer seems like its a dream. But, I just can't seem to get it to lay correctly. Attached is a picture of my problem. It looks like nibs in the paint. I've seen other posts claiming the same sort of thing is due to shooting the 1st coat too heavy; so I carefully throttled everything back, and I still have this problem. Here are my details
I thought it would be a good idea to try a practice project before spraying parts on the GTO. I've got an old parts washer that needed paint, so I thought great, I'll treat that to a new paint job.
Gun is DeVilbiss Finish Line 4 with 1.5 tip and HVLP aircap (says to shoot at 23 psi in the manual).
I've carefully followed Barry's recommendations for epoxy; 90% fan, 2.5 to 2.75 turns out in flow, at the above 23 psi. Any further in on the flow and nothing seems to come out.
Heat at 75 in the shop. Parts were sandblasted, followed by two apps of wax and grease remover 700 according to the spray and wipe clean method. The
finish is a bit rough, but nothing is sitting on the surface.
First coat went on very thin, followed by a thicker coat after about 12 hours. The picture is after the second coat. Even the thin first coat showed some nibs in it.
From what I've read here, I'm putting too much paint on, but I'm at a loss how to throttle back even further. Does anybody else paint with this gun? And does it work? Somebody clue me in; this is awfully expensive and frustrating to keep sanding this paint off!
Doug
I'm a retired electrical engineer with a project, a 67 GTO convertible on which I am attempting a frame-off resto. I have been following this forum for a few months and the SPI epoxy primer seems like its a dream. But, I just can't seem to get it to lay correctly. Attached is a picture of my problem. It looks like nibs in the paint. I've seen other posts claiming the same sort of thing is due to shooting the 1st coat too heavy; so I carefully throttled everything back, and I still have this problem. Here are my details
I thought it would be a good idea to try a practice project before spraying parts on the GTO. I've got an old parts washer that needed paint, so I thought great, I'll treat that to a new paint job.
Gun is DeVilbiss Finish Line 4 with 1.5 tip and HVLP aircap (says to shoot at 23 psi in the manual).
I've carefully followed Barry's recommendations for epoxy; 90% fan, 2.5 to 2.75 turns out in flow, at the above 23 psi. Any further in on the flow and nothing seems to come out.
Heat at 75 in the shop. Parts were sandblasted, followed by two apps of wax and grease remover 700 according to the spray and wipe clean method. The
First coat went on very thin, followed by a thicker coat after about 12 hours. The picture is after the second coat. Even the thin first coat showed some nibs in it.
From what I've read here, I'm putting too much paint on, but I'm at a loss how to throttle back even further. Does anybody else paint with this gun? And does it work? Somebody clue me in; this is awfully expensive and frustrating to keep sanding this paint off!
Doug