Not spraying well

The test pattern on the left is the final.
White epoxy can be a challenging material. My recommendation at this point is to get a quart of black epoxy #6620 and intermix it with the white, this will result in less of a learning curve for this material.
Yeah rather disappointing. I am going with another brand that I am familiar with. I know that other material well and it will cover and lay down nicely. I need white as I am going with a light orange base. It’s a shame I really wanted to like this stuff and heard such great things about it. I guess I just don’t have the right touch to get it the way I needed it….
 
The white will not have good coverage, that's normal. I've only sprayed white once and it was for a white corvette; I didn't like it. Unless it's going to be a black car, I use gray for everything. A good quality white base will still readily cover gray.
I am shooting it light orange. I have another mfg gray epoxy primer that I’ve used successfully on the first two coats.
 
It's really hard to diagnose stuff on the Internet. If one of us that have used SPI could be there with you I think it might have been different, but I hope you achieve the results you want with the other stuff!
 
Will you please let us know how the other stuff turns out. Like Crash said so hard to diagnose over the internet. Any members close by you could have them try the white epoxy ? Has any one touched on the subjet of a bad batch ? I am almost sure this is not the case But,,,,,,,,,,,,,,
 
It's white epoxy being white epoxy. Nochain should try a 1/4 of grey or black, or possibly intermix a quart of black with the white he has. Once he sands he will see the benefits.

I had the same issues when I started with white after a 6 year break. Pictures in my thread look just like his. Since I knew the product previously and needed more anyway, I bought a gallon of black and am on my way.

The white that I shot 6 years prior when I was "in practice" shooting SPI all the time, with white still looks flawless, so it can be shot, but it is a feel thing.

One thing I noticed is, the longer you let it induce, the better it sprays BUT during induction it separates so you need to stir it up before you pour into the gun right before shooting. With Dekups one time in the beginning, I let it induce in the dekup, connected the dekup turned it over and shot, no bueno.
 
I thought I'd add some pictures, from recent when I was out of practice with white
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From years ago when I was "in practice". I got so good, I could even paint white in a door.
 

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Will you please let us know how the other stuff turns out. Like Crash said so hard to diagnose over the internet. Any members close by you could have them try the white epoxy ? Has any one touched on the subjet of a bad batch ? I am almost sure this is not the case But,,,,,,,,,,,,,,
Yup later this week. Just to be clear I have been actively spraying another bran of epoxy primer successfully on and off as I had been doing the bodywork. I was hoping for a flawless finish in white as the existing epoxy substrate was hand blocked very nicely. Since I plan to paint the car a bright and light orange I wanted a white primer. This is what I started the SPI with.
 

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It's white epoxy being white epoxy. Nochain should try a 1/4 of grey or black, or possibly intermix a quart of black with the white he has. Once he sands he will see the benefits.

I had the same issues when I started with white after a 6 year break. Pictures in my thread look just like his. Since I knew the product previously and needed more anyway, I bought a gallon of black and am on my way.

The white that I shot 6 years prior when I was "in practice" shooting SPI all the time, with white still looks flawless, so it can be shot, but it is a feel thing.

One thing I noticed is, the longer you let it induce, the better it sprays BUT during induction it separates so you need to stir it up before you pour into the gun right before shooting. With Dekups one time in the beginning, I let it induce in the dekup, connected the dekup turned it over and shot, no bueno.
Yup I induced for 30 minutes minutes and stirred before and after as the manyal called for.
 
Quoted for the truth. I don't care what air compressor a person owns. They all produced moisture / water. Some more than others. When I first started building my air system, I built a wall hung 3/4" - 72' of copper cooling manifold. Coupled that with a water / oil separator at the compressor tank. Then another 20' of 3/4" copper pipe to three in line separators, with desiccant filter. This did work if I purged water daily from the air compressor tank and water/oil regulators. I was still having to change desiccant beads every 3 to 4 days.

Got tired of changing desiccant beads so often, so I installed an automatic drain valve on the bottom of the air compressor tank, and added a cheap Harbor Freight Air dryer. That solved my issues for obtaining dry air. I still have to drain the oil water regulator at the tank daily.

3/4" copper cooling manifold
View attachment 24789

Wall regulators
View attachment 24790

Air dryer with bottom tank automatic drain valve.
View attachment 24791
I have the same compressor. She’s a water pump for sure! Typical of most high rpm compressors these days. Some day I’ll pony up for a quality low rpm compressor. But for now the IR has been a great compressor just need to control the moisture. The Tranny cooler between the pump and tank is nice because it basically cools the air down to room temp before it even enters the tank. But you can never take too many precautions with contaminated air. What are the filters/regulators your using after the tank if you don’t mind me asking?
 
I'm one of the least experienced guys on here so take what I say with a grain of salt, but since you say it's already epoxied but you just want it a different color under you base, I'd smooth any rough primer, and if you're still in the current white epoxy's recoat window, reduce the epoxy a little and spray it as a sealer coat. Reduced it lays our real flat, then it should be ready for color.
 
Ok last spray of my material today making it my 3rd coat. I increased the dwell from 30 minutes to 1 hour. Ambient is about 10 degrees warmer today at 82F! I think Barry knows what he is saying as everyone here knows. I believe the warmer temperature made a HUGE difference! It now sprays like a traditional base coat. I’m believe its the temperature but the longer dwell probably helps as well as a like material substrate.
Here are some pictures:

If I was “to mark up” the data sheet I would change the minimum temperature to at least 75F minimum for application and increase the dwell time to 1 hour. And I would add a note that the first coat may not be that great and to hang in there it gets better as you build it.
 

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I have the same compressor. She’s a water pump for sure! Typical of most high rpm compressors these days. Some day I’ll pony up for a quality low rpm compressor. But for now the IR has been a great compressor just need to control the moisture. The Tranny cooler between the pump and tank is nice because it basically cools the air down to room temp before it even enters the tank. But you can never take too many precautions with contaminated air. What are the filters/regulators your using after the tank if you don’t mind me asking?

I have these three on the wall.

I have these two at the compressor tank. Form the tank, that is a manual drain water/ oil separator. Then a gauged water/oil regulator. That was need to regulate air pressure into the air dryer.


 
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Final shots. I think I am ready for final blockout the seal and paint?
 

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Glad you got it figured out. You won't regret it. The 70 degree recommendation is for curing. Warmer product always sprays better.
 
So, if you would have listened to Barry's advice to begin with and heated the epoxy up, you could have avoided a lot of heartache. After all, he is the one that makes it. Just saying.
 
So, if you would have listened to Barry's advice to begin with and heated the epoxy up, you could have avoided a lot of heartache. After all, he is the one that makes it. Just saying.
Well armchair cowboy I made an honest attempt to try and figure out why I was having an issue(s). I took a systematic approach and made changes to my system that I thought appropriate. I took the great advice of those that tried to help and was sincere and appreciated it. I learned a lot from the inputs of those that offered help and from the steps I took to try and solve the issue.
It had nothing to do with not listening.
 
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