HVLP Runny paint and Orange Peel Help!

Clark

The whole point of HVLP is to give such low pressure that bounce-back (often confused with "over-spray") is minimized. I've been told by friends that I'll never get enough increased efficiency to recoup the HVLP cost. That's not the point. Creating a substantially better environment for me to work in, is. Get the product on the work with a satisfactory film in the most efficient manner. If you're looking for maximum product out of the nozzle, go airless.

HVLP Low Pressure Technology:

modern paint spraying method with lower air cap pressure dynamic inlet pressure max. 3 bars - Atomization pressure max. 0.7 bar Reduced overspray and paint bounce-back compared to conventional paint spraying up to 30 % material savings, excellent finish no turbines necessary due to built-in air converter unlimited fields of application for all possible paint jobs.

In order to obtain an excellent atomization despite the reduced air cap pressure, a large air volume is indispensable. It may be up to 40 % above the air consumption of comparable high pressure guns. Cost for this additional air consumption, at a difference of 120 l/min and with a partial paint job having a material consumption of 1 kg paint, amounts to 0.03 DM. However, this additional cost must be seen parallel to considerably increased material savings (0.60 DM for each transfer efficiency increase by 1 %; 10 - 30 % are common). Since the transfer efficiency of HVLP spray guns is in general significantly higher than that achieved with spray guns featuring a higher air cap pressure (no matter if they are called high pressure guns, conventional, compliant, T.E.C. or Trans-Tech) there is no doubt about the advantages of HVLP technology, due to the mere technical facts. Taking into consideration the paint savings potential, the cost for additional air consumption becomes fully irrelevant.

I would still like to know where he is measuring his 10 psi at.

I did buy the correct thinner now and the parts have been sanded smooth. I am concerned that the paint was not real hard after 4 days. How long does enamel paint take to get hard? I don't want to paint over my mistake just to find the paint I did apply never hardens up.

Clark

I once ran into that with an automotive lacquer that an employer insisted was the best product ever. Turns out it didn't work for wood. Solvent got trapped and the film never set up properly. Took a mfg. co. chemist to get it cleared up. And the idiots I was working for had done this on 23 $400,000+ houses. At least they let me buy the correct reducer, that we changed, depending on time of year, to adjust the speed. Good luck.

clark

Now your orange peel is mostly dependent on the type of paint and its self-leveling ability. You know you need to have the coat "wet", right? Dry spots will give you a less even coating. Gotta develop that touch. Have at it... and have fun.

Clark

Clark

Watched a guy paint a pickup truck once and he used Coleman latern fuel as a reducer!!!! "Best @$%^*^ paint thinner you can get" he said with a smile. Then later he let out another oath as he watched his paint shrivel up.

I just shook my head and walked off.

Thanks all
Clark