Refinishing Problem

[Graeme Harvey]

Terry,

Orange peel can also be caused by not enough thinner in the material ie, too
thick (so to speak). Also you may be trying to put too heavy a build on. I
would cut back on the material a little first, and if this doesn't solve the
problem try thinning the material a little more. I would rather make several
passes with thinner material than load up on one pass. Overly thick builds
can cause other problems such as air being trapped etc. There are so many
variables you will need to experiment a little to get the feel, but once you
do then it should go well for you.

I should add that I am unfamiliar with the particular product you mentioned
as well as the gun, however I have refinished pianos for about 15 years with
all sorts of coatings, so know what you're going through.

Good luck, and let us know the outcome as I am interested.

Cheers...
Graeme Harvey
New Plymouth NZ


> 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
>
>