Refinishing Problem

[Wilsons]

Farrell,

    Sometimes problems like this are caused by putting too many coats on in one
day.  A really knowledgeable individual told me that, when I was having trouble.
These manufacturers will say you can put a few coats on and be done in a day,
but it's not so.  Water based or not, or water- borne or not, it has to cure.

---Wally Wilson, RPT
    Columbus chapter
    Ravenswood, West Virginia

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