HF 66222 HVLP Spray Gun

[tonycastec]

That's an affirming opinion on the Binks Mach 1-thank you. I just bought two used ones!
One is attached to a HVLP pressure-pot system the other is a conventional 1 quart siphon system. I also got an Asturo as a freebie!
I was interested to read elsewhere that experienced painters often have an assortment of guns dedicated to specific fluids (primer, clear etc.). I'll enjoy trying a few different set-ups to see what works best for me.

A pro-painter suggested to try running the HVLP gun at much higher pressure than the usual/approved 20psi when using materials that are marginally too heavy for the needle/fluid nozzle combo in a particular hvlp gun . He said it might work if the over-spray isn't a problem. It will be an interesting trial & error learning experience.

Now to find a "97"(1.7mm) fluid nozzle for the Mach 1.

 

[neutral]

ok this is great stuff guys. Much appreciated. So if i may i'm gonna keep this flow of awesome knowledge and experience going.

When spraying the base coat how "heavy" should one spray. Ie does one want to make sure to have full coverage on the first coat or is it ok to have very thin coats one on top of the other? i guess i may have a solution to my problem after increasing the pressure at the gun. The reason i'm asking is because when i was spraying i felt that the droplets were too large and thus if i made a "thin" coat it looked pebbley but if i attempted to have a heavier coat to allow the paint to rest and self level i was spraying too much paint too the point of running.

also for the clear is it important to have a wet coat on the clear. Sorry if i'm asking stupid questions i just don't like mediocrity so i want a good finish.

thanks guys

 

[tonycastec]

I can identify with your newbie painting questions. Here's a link to a forum that is fun and oriented to auto painting.You might enjoy it & find some answers:
http://www.custompaintforum.com/forum/forum.php?

 

[Pro-Painter]

ok this is great stuff guys. Much appreciated. So if i may i'm gonna keep this flow of awesome knowledge and experience going.

When spraying the base coat how "heavy" should one spray. Ie does one want to make sure to have full coverage on the first coat or is it ok to have very thin coats one on top of the other? i guess i may have a solution to my problem after increasing the pressure at the gun. The reason i'm asking is because when i was spraying i felt that the droplets were too large and thus if i made a "thin" coat it looked pebbley but if i attempted to have a heavier coat to allow the paint to rest and self level i was spraying too much paint too the point of running.

also for the clear is it important to have a wet coat on the clear. Sorry if i'm asking stupid questions i just don't like mediocrity so i want a good finish.

thanks guys

Super fine atomization is the difference between a cheap "general purpose" gun and professional automotive gun. If your sure your basecoat is mixed correctly, and you have the right temp reducer, Try adjusting your air pressure higher. That should give you a finer spray, unless your already at the guns limit. The trade off of higher pressure will be a higher material loss from over spray, and the higher chance of overspray/dryspray. SO you will need to work more carefully. keep an eye on your overspray, It may land back on the substrate and cause a ruff if you don't have well ventilation. To reduce your overspray, spray closer to the substrate. You may need to turn your material & fan down to do this, but you want to keep it has high as your comfortable with.

For basecoat, You want each coat to be medium wet. Meaning, It needs to have full coverage, and look wet once sprayed, but not thick. You want each coat to just cover the last, while maintaining a wet appearance.