I am doing something wrong

[tradercj]

Actually I think I must be doing multiple thing wrong....

I am getting alot of specs in my surface.

Here is what I am working with:
5 HP 30 gallon 120 V compressor
Cheap HVLP gun (Eastwood Concours)
Gun pressure at inlet 29 PSI
Disposal plastic desiccant filter
1.4 Tip
Hard pipe 3/4" lines - sentiment trap to collect moisture and a little moisture separator in line. Compressor drained before painting.
Temperature inside garage 75 degrees

My spray pattern I think is good. I think I was holding the gun at an angle but the pattern is elliptical, not skewed. I circled, hope you can see, the wet section. It is about 6-1/2 inches tall with the gun 7 inches away.

My workspace is not 100% clean, but in the past spraying primer I have not had an issue with it.

I am getting alot of overspray, I attached a picture of what the floor looked like after 2 coats of primer the inner floor pan and the underneath of the car. I know overspray is because of the gun being setup wrong, but I think the spray pattern is good. What usually causes overspray in a HVLP gun, too much air or too much fluid?

I am currently not venting my garage. I have an industrial fan that I was using before to vent, but it is not explosion proof, so everything I read on the internet has made me scared to use it. I only turn it on after I am done painting. So I know I need to work on venting for future painting.

Can the specs be overspray being trapped in the paint, or is it just dirt? This isn't moisture is it, the specs are raised not dimpled. The picture I provided is the floor pan. I usually like to water running on the floor, but I was also spraying the underneath of the car and did not want to be laying in water.

I sprayed the engine bay the other day, and had some of these specs, but no wear near the amount I have today.

I am using black epoxy, I never used black before only gray, maybe the problems were always there and I just did see them?

Any advice?
Thanks in advance, Chris

 

[Bob Hollinshead]

dirt or fibers from your toweling, give it a light sanding, clean it, tack rag it, and shoot one more coat

 

[crashtech]

Include tacking off and how you strain the material in your procedure description. I like to use Gerson 125 micron disposable strainers. The cheap Chinese ones paint stores usually hand out for free are junk.

 

[moparmusclecars]

I personally would get some kind of venting in that place you are working. You will be dealing with lots of over spray until you address that issue. Plus, all that over spray will just go back down and lay on the surfaces you just sprayed and tried to make nice.

 

[tomsteve]

its a good practice to blow out every nook and cranny before shooting paint. wheel wells, door jambs, trunk and hood jamb, grill,etc.

 

[tradercj]

I did everything that was suggested above and the next coat turned out great.

I did have a couple of other issues come up, I will take pictures later and post a new thread.

Thanks everyone!