Hey guys,
I need some help because i'm so frustrated i'm about to throw my paint equipment out the window!
Here is alittle background. I have a business making polyurethane auto body products. I went out and purchased a high end turbine system Fuji Q5 5 stage turbine 9.5PSI. So far its been wonderful, except for clear application which I cannot seem to figure out! I'm painting in a climate controlled area that is always 65 to 70 degrees. The turbine system I have is a new generation that does not get as hot as the old style units. I ran some test and the air coming out of the turbine after running for awile gets maybe 10 degrees hotter then room temperature.
I'm using another brands clear. I used their 2 hour clear and when I clear the parts they look beautiful. However as it cures it dies back. I've literally tried everything trying to debug this problem. I understand dieback is from solvents being trapped usually in basecoat because not enough flash time etc.
I've done significant test on panels and narrowed it down to the clear. I got a black raw plastic product, sanded it down, then cleared that and same dieback happened. I tried using all three hardener, the fast, medium and slow. All give the same results of dieback. I tried applying very light coats to heavy coats. I've painted them outside vs inside. I've painted them with booth fan running vs fan off. I tried spraying with different tip sizes .8m, 1.0m and 1.3m. All same results.
I tried their slower version of the same exact clear which has a 10-15 minute flash time and overnight cure. It did make a difference...I applied light coats so it came out orange peely in the pictures below but there is still some ever so slight dieback, big improvement over the speed clear however.
The main reason I went with this other brand was that they advertise their clear gets rock hard the next day, whereas I read with SPI it can be soft. I will be shipping these products that are painted so I don't want them getting scratched easily. I also would like to be able to use a tungsten carbide denib blade.
Do you have any idea of whats happening? I don't want to keep wasting money on clear and it does not work for my application. What clear do you sell that you recommend? I see others using same turbine say the universal works great. These is even a youtube video of someone spraying the SPI Universal with an Apollo Turbine. My concern is the softness?
I need some help because i'm so frustrated i'm about to throw my paint equipment out the window!
Here is alittle background. I have a business making polyurethane auto body products. I went out and purchased a high end turbine system Fuji Q5 5 stage turbine 9.5PSI. So far its been wonderful, except for clear application which I cannot seem to figure out! I'm painting in a climate controlled area that is always 65 to 70 degrees. The turbine system I have is a new generation that does not get as hot as the old style units. I ran some test and the air coming out of the turbine after running for awile gets maybe 10 degrees hotter then room temperature.
I'm using another brands clear. I used their 2 hour clear and when I clear the parts they look beautiful. However as it cures it dies back. I've literally tried everything trying to debug this problem. I understand dieback is from solvents being trapped usually in basecoat because not enough flash time etc.
I've done significant test on panels and narrowed it down to the clear. I got a black raw plastic product, sanded it down, then cleared that and same dieback happened. I tried using all three hardener, the fast, medium and slow. All give the same results of dieback. I tried applying very light coats to heavy coats. I've painted them outside vs inside. I've painted them with booth fan running vs fan off. I tried spraying with different tip sizes .8m, 1.0m and 1.3m. All same results.
I tried their slower version of the same exact clear which has a 10-15 minute flash time and overnight cure. It did make a difference...I applied light coats so it came out orange peely in the pictures below but there is still some ever so slight dieback, big improvement over the speed clear however.
The main reason I went with this other brand was that they advertise their clear gets rock hard the next day, whereas I read with SPI it can be soft. I will be shipping these products that are painted so I don't want them getting scratched easily. I also would like to be able to use a tungsten carbide denib blade.
Do you have any idea of whats happening? I don't want to keep wasting money on clear and it does not work for my application. What clear do you sell that you recommend? I see others using same turbine say the universal works great. These is even a youtube video of someone spraying the SPI Universal with an Apollo Turbine. My concern is the softness?