Xephius
03-03-2009, 07:05 AM
Hi,
I am repainting several of my bikes, and decided I wanted to give this system a try myself. The tank and fenders have been removed, sanded and prepped. Tonight my friend and I went to shoot the primer and thought we were having paint gun troubles. We were using a nice American made pro paint gun (I forget the name) and were getting poor atomization. With the trigger fully depressed, we started the PSI at 25 and worked up to 40 measured at the gun. Despite several variations on pressure, mixture and adjusting the "pattern" adjuster we couldn't shake the large droplets of primer. The gun had a 1.4 nozzle.
I switched to a Chinese made "K-3" detail gun with .06 nozzle and we had the exact same problem, but I found a "groove" with the gun and got the coverage to even out and lay nicely for several wet coats. After it was all laid (and dryed for about an hour) I wet sanded the primer for a smooth finish.
Here is the Chinese made gun for reference...
http://www.made-in-china.com/showroom/bss0576/product-detailueLntdgPOzVu/China-Small-Spray-Gun-K-3-.html
I also have this gun if it would be better to use, just never opened the box.
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=47016
We decided that it was probably not the thinness of the paint (different nozzles, same problem), probably not the PSI (tried everything from 20-40PSI at the gun with trigger depressed), probably not the guns (the Chinese one was new and the other had painted before), so I can only assume it was environmental. We were shooting with ambient temperatures at about 50F. I read other posts saying that is ok, but it is the only thing I can figure.
I stopped at that point and decided to wait until tomorrow to shot the black. I was hoping I might get some advice on what might be going wrong here. My plan is to lay down the black in a wet base coat, then follow up with 2 or 3 lighter coats. Then wet sand. I will be sending it out at that point to get a flame job by an airbrush guy. Once he brings it back, I plan to use the Duplicolor clear coat in 2-3 coats and sand/lightly buff.
Any advices on how to get better atomization would be great. I really hope to get a solid handle on how to do this so I can do my other bikes, and who knows, maybe by hot-rod.
Thanks
-X
I am repainting several of my bikes, and decided I wanted to give this system a try myself. The tank and fenders have been removed, sanded and prepped. Tonight my friend and I went to shoot the primer and thought we were having paint gun troubles. We were using a nice American made pro paint gun (I forget the name) and were getting poor atomization. With the trigger fully depressed, we started the PSI at 25 and worked up to 40 measured at the gun. Despite several variations on pressure, mixture and adjusting the "pattern" adjuster we couldn't shake the large droplets of primer. The gun had a 1.4 nozzle.
I switched to a Chinese made "K-3" detail gun with .06 nozzle and we had the exact same problem, but I found a "groove" with the gun and got the coverage to even out and lay nicely for several wet coats. After it was all laid (and dryed for about an hour) I wet sanded the primer for a smooth finish.
Here is the Chinese made gun for reference...
http://www.made-in-china.com/showroom/bss0576/product-detailueLntdgPOzVu/China-Small-Spray-Gun-K-3-.html
I also have this gun if it would be better to use, just never opened the box.
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=47016
We decided that it was probably not the thinness of the paint (different nozzles, same problem), probably not the PSI (tried everything from 20-40PSI at the gun with trigger depressed), probably not the guns (the Chinese one was new and the other had painted before), so I can only assume it was environmental. We were shooting with ambient temperatures at about 50F. I read other posts saying that is ok, but it is the only thing I can figure.
I stopped at that point and decided to wait until tomorrow to shot the black. I was hoping I might get some advice on what might be going wrong here. My plan is to lay down the black in a wet base coat, then follow up with 2 or 3 lighter coats. Then wet sand. I will be sending it out at that point to get a flame job by an airbrush guy. Once he brings it back, I plan to use the Duplicolor clear coat in 2-3 coats and sand/lightly buff.
Any advices on how to get better atomization would be great. I really hope to get a solid handle on how to do this so I can do my other bikes, and who knows, maybe by hot-rod.
Thanks
-X