I've been battling and battling this problem and I just cannot figure out how to resolve it. I did some more testing and trial and error scenario's but I feel like I am at the end now and now sure what else to try...
I am shooting the SPI Production Clearcoat with medium activator in a climate controlled 63/67 degree room when its winter time. I do (2) coats with a 30 minute flash time. I am only doing small parts painting.
Whenever I clear, about 1-2 hours into the curing cycle, tiny little pinhole dots are showing up which to me is solvents trapped. The stuff I paint is curing correctly and looks great, its maintaining gloss its just those every so faint pinholes consistently throughout the whole part.
I basecoated a part and left it sit for 2 weeks and I got a factory painted part and recleared that. Both parts cured exactly the same so that eliminated that its anything but the clear coating process. I switched to the SLOW activator thinking that was the problem and it cured exactly the same as the medium activator. I turned off the booth fan, and I also ran the booth fan while the parts cleared it made no difference.
I've tried another brands clearcoat which is a faster clear with 2 hour cure time. I used their Medium hardener and it completely dies back and its total loss of gloss. I tried using the SPI FAST hardener with the clear and this made the process worse it total dieback.
I just don't get what I am doing wrong. I am using a Iwata LP80 with 1.2 tip.
I have the Very Slow and Urethane retarder here that I haven't experimented with.
Last idea I have is that I store the clearcoat and reducer on a concrete surface floor. I thought maybe its getting cold and changing the viscosity of the clearcoat so that it flows thicker similar to engine oil? Should I try and warm up the clear before applying it? Or should I try an even longer flash time between coats of clear?
I am shooting the SPI Production Clearcoat with medium activator in a climate controlled 63/67 degree room when its winter time. I do (2) coats with a 30 minute flash time. I am only doing small parts painting.
Whenever I clear, about 1-2 hours into the curing cycle, tiny little pinhole dots are showing up which to me is solvents trapped. The stuff I paint is curing correctly and looks great, its maintaining gloss its just those every so faint pinholes consistently throughout the whole part.
I basecoated a part and left it sit for 2 weeks and I got a factory painted part and recleared that. Both parts cured exactly the same so that eliminated that its anything but the clear coating process. I switched to the SLOW activator thinking that was the problem and it cured exactly the same as the medium activator. I turned off the booth fan, and I also ran the booth fan while the parts cleared it made no difference.
I've tried another brands clearcoat which is a faster clear with 2 hour cure time. I used their Medium hardener and it completely dies back and its total loss of gloss. I tried using the SPI FAST hardener with the clear and this made the process worse it total dieback.
I just don't get what I am doing wrong. I am using a Iwata LP80 with 1.2 tip.
I have the Very Slow and Urethane retarder here that I haven't experimented with.
Last idea I have is that I store the clearcoat and reducer on a concrete surface floor. I thought maybe its getting cold and changing the viscosity of the clearcoat so that it flows thicker similar to engine oil? Should I try and warm up the clear before applying it? Or should I try an even longer flash time between coats of clear?
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