On Tue, 15 Oct 2002 16:26:07 -0700 (PDT) gordon stelter <lclgcnp@yahoo.com> writes: > How about giving us some info about how its done, if > you please? > Thump Hi Thump - (To be clear, in the following reply I am not referring to Pianolac specifically, a finish I have never tried, but rather to water-based lacquer in general, and I HAVE used quite a few of them.) Like riding a bike, I think you could read forever on the subject of spraying and only gain insight by experience alone. I think Dale's experience illustrates what I was referring to rather succinctly. "Stuff just happens", and even more so when you are coming to something for the first time. In addition, the chemistry of the Water-based materials make them a bit of an odd critter to spray if one has spent years spraying solvent-based, making the application seem counter-intuitive in many ways. Basically most of it comes down to more control over your technique with the gun, and attention to proper atomization of the product. I think the stuff is considerably less forgiving that way than nitro, and only part of that is due to the high solids content of the material. Put another way, I guess you could say it is a more complex finish. "Spraying water-based 101" would be a class solely devoted to not only learning how much material to apply in a pass, but would include learning to know what it "looks like" on the surface when wet. Your experience from nitro tells you there is not nearly enough material on there because it looks uneven, with craters and orange peel waiting to rear their ugly heads. The leveling takes place in a coalescing fashion dissimilar from nitro, so it can be visually disconcerting. Consequently, there is a tendency to apply either too little or too much in compensation until you have had enough hands-on experience to tell you otherwise. Only by familiarizing yourself with the product by use would you have any hope of becoming efficient with it, but to me it was well worth the effort. I have very few unpleasant surprises these days, and certainly no more than one would have applying any finish. Mark Potter bases-loaded@juno.com > --- bases-loaded@juno.com wrote: > > > > Hi Ed - > > > > I am not a user of Pianolac, so I can't speak > > directly to your query. > > However, I have sprayed water-based finishes > > exclusively over the past 9 > > years or so, after a dozen or more years of spraying > > nitro. I wouldn't > > even dream of going back, as I have been elated with > > the results: a FAR > > friendlier finishing environment, reduced cost of > > materials, reduced > > insurance costs, quicker build, harder film, better > > clarity, faster cure. > > > > > > That being said... it can be a very steep learning > > curve for the > > life-long nitro finisher, and many is the time I > > have heard first-hand > > accounts of horror stories from nitro guys trying it > > for the first time, > > and consternation as to why in the world anyone > > would switch from > > solvent-based to water-based. To be honest, my > > primary reason was for a > > better shop environment, and that is certainly an > > immediate reward. > > After a year or two of learning new intuitions to > > "make it work", I also > > came to appreciate the other film advantages as > > well, but many finsihers > > could easily get discouraged enough along the way to > > climb back on the > > horse that they are familiar with and leave the > > trail. > > > > If you are unsuccessful with switching him over to > > water-based, how about > > at least proposing a better solvent-based one? > > > > Mark Potter > > bases-loaded@juno.com > > > > > > > > _______________________________________________ > > pianotech list info: > https://www.moypiano.com/resources/#archives > > > __________________________________________________ > Do you Yahoo!? > Faith Hill - Exclusive Performances, Videos & More > http://faith.yahoo.com > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives > >
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