My experience with Fuji Spray

[tjbnwi]

Tom, what are those for?

Projector covers/boxes. They install about 12" from the ceiling. They're part of the large millwork job I had posted about.

Tom

 

[Pnw painter]

What product are you using on the covers?

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[tiralie]

In conclusion, is this a problem with the material or the equipment?

Both really but mostly the paint.
Wall paint is a non-Newtonian fluid and it resists gradual deformation by shear or tensile stresses (gravity) after application. After it is applied it gets thicker. It is designed to be easy to apply but then after application get thicker to resist sags or drips.
It isn't designed to be sprayed with an 3 stage HVLP system and level.
High pressure systems like airless or air assisted systems can usually get a better coating but the thixotropic qualities of the paint allow it to be sprayed but the the shear thinning properties increase the viscosity so any small droplets stay put.  Latex paint become less viscous after being shaken, agitated, or otherwise stressed.
Tim

 

[tjbnwi]

What product are you using on the covers?

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Tinted Kem Aqua + White, Mid Gloss.

Tom

 

[tiralie]

Let me know a few hours ahead of your arrival, need time to prepare dinner. Let me know what your favorite is, that's what I'll make.

I usually know well in advance and will let you know.
Time available is usually the issue, well that and my wife would rather go to museums etc. and not stand around and discuss the intricacies of paint and paint spraying.
Tim

 

[tjbnwi]

Let me know a few hours ahead of your arrival, need time to prepare dinner. Let me know what your favorite is, that's what I'll make.

I usually know well in advance and will let you know.
Time available is usually the issue, well that and my wife would rather go to museums etc. and not stand around and discuss the intricacies of paint and paint spraying.
Tim

I agree with your wife. Downtown and the museums are a better choice.

Tom

 

[Michael Kellough]

In conclusion, is this a problem with the material or the equipment?

Both really but mostly the paint.
Wall paint is a non-Newtonian fluid and it resists gradual deformation by shear or tensile stresses (gravity) after application. After it is applied it gets thicker. It is designed to be easy to apply but then after application get thicker to resist sags or drips.
It isn't designed to be sprayed with an 3 stage HVLP system and level.
High pressure systems like airless or air assisted systems can usually get a better coating but the thixotropic qualities of the paint allow it to be sprayed but the the shear thinning properties increase the viscosity so any small droplets stay put.  Latex paint become less viscous after being shaken, agitated, or otherwise stressed.
Tim

If JC got everything else right could the problem been as simple as temperature of the product?

 

[tiralie]

If JC got everything else right could the problem been as simple as temperature of the product?

Doubtful but I will ask him. The turbine will heat the paint, but unless the paint is already at a high temperature it shouldn't negatively affect the way it dries.
For optimum professional results, latex house paint should not be sprayed with an turbine driven HVLP system.
He and I have spoken often on this topic and he sprays in an air-conditioned space. I believe although I have not checked with him, that he stores his paint in the same air conditioned area.
Tim

 

[Michael Kellough]

I'm recalling a project where I had to heat the "latex" paint to get the the viscosity needed to spray/flow right. A few degrees made a significant difference. Original Accuspray compressor driven HVLP with pressure pot. Used a small PP and rigged it to stay deep in a big bucket of warm water.

 

[CarolinaNomad]

Did you guys meet. Tim and JC?  If not, do you mind if I join you?  I'm in the middle of spray painting a bookshelf. 

 

[tiralie]

Did you guys meet. Tim and JC?  If not, do you mind if I join you?  I'm in the middle of spray painting a bookshelf.

Sorry missed this.
We did meet.
I didn't spray any Regal on his visit (still haven't) but have since sprayed some Advance for some drawer fronts.
I added 10% distilled water and sprayed it with my Q4 using my XPC gun on the pressure pot with a .1mm needle under 15lbs of pressure. Advance is annoying paint to work with as there is a very small variable in mil thickness between getting orange peel (too much) and dry spray/stripping (too little) or, but it will level if sprayed with an even thin coating.
Given a choice I would always opt to spray Kem Aqua +. A much more forgiving paint that dries very hard.
Tim