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thetorch thetorch is online now
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Join Date: Mar 2021
Location: SF Bay Area
Posts: 556
Help with Solvent Pop

Super frustrated trying to paint a few small items like my fog light covers on the lower front bumper. If I get it wet enough, getting what looks like solvent pop immediately. Happens on first coat over primer. No fan, no heat being used.

I have tried pressures from 15 PSI to 40, different volumes, different coats from barely covering to full wet. Higher pressures seem to have fewer pops but create horrible orange peel. Lower pressures (15-20) should be correct according to Iwata. Small gun so shooting 4-6 inches away per spec.

Paint: Axalta Nason Spectramaster Ful Thane (Dupont) single stage low VOC 2.8
Activator: Axalta Nason 483-30 Ful-Base Activator
Reducer: I have tried both Nason Med Temp and High temp (slow) Reducer
Suggested mix: 4:1:2. I have tried 4:1:1 and got less pops but worse peel. I have not tried 4:1:1 with the slow reducer yet.
Paint temps: shot between 78F and 82F, inside and outside. No difference.
Gun: Iwata LPH80 with 1.2mm tip. I have also tried a 0.8mm tip.

Helpful suggestions welcome. My instinct is that it's related to the gun setup: shooting too close is causing the paint to skin and pop?




Last edited by thetorch; 09-09-2022 at 03:25 PM..
Old 09-09-2022, 02:33 PM
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