Refinishing Problem

[Richard Oliver Snelson]

I've had a lot of experience with HVLP Turbines and if you check the air
temp of the gun you might find it to be very high. With aircraft paint I
had to use a lot of retarder because of the gun temp. The room temp had
little effect on the results.  One answer is to double or triple the
hose length to the gun. Possible coil the hose in a trash can of ice.
Just some ideas that worked for me. 
Rich

Farrell wrote:
> 
> PianoTech Refinishers:
> 
> I am looking for input from any of the refinishers in the group that work
> with water-base materials. I am having trouble with what I believe is
> commonly referred to as "orange peel".
> 
> I am using Enduro polyurethane water-base hi-gloss clear-coat (numerous
> refinishers have indicated that it is the "best") with an Accuspray spray
> gun equipped with a #9 nozzle and a 0.043 tip (this is the combination
> recommended by Enduro for the product I am using). My sprayer is supplied
> with air by a 3-stage turbine. I am typically spraying with atmospheric
> conditions of about 80 degrees and 60% relative humidity.
> 
> My understanding is that "orange peel" (my refinishing is coming out looking
> like the skin of a basketball - only finer grained - is this "orange peel")
> is caused by the material drying before it has sufficient time to flow out.
> It seems to me that 80 degrees is not too hot ( it is hard to get it lower
> in the summer), and 60% humidity is certainly not too dry. I am spraying
> within 6 - 8 inches from the object being sprayed. I am putting on what I
> think is enough material - it looks real wet and if I put any more on it
> will run (I know that for a fact!).
> 
> What on earth am I doing wrong????? Anyone???? Any ideas????? Help!!!!!!
> 
> Terry Farrell
> Piano Tuning & Service
> Tampa, Florida
> mfarrel2@tampabay.rr.com