Terry, First and foremost, trust the response from Mark far more than this one from me. Make sure that the size tip/nozzle and air cap are exactly what Mark posted earlier. Orange peel will all but disappear. Is yours a conversion gun? I'm happy with my turbine unit and know nothing about pressures required from a compressor. I understand that at least a 5 HP compressor is needed to keep up but, again, I will defer to Mark and other on this. Sanding through the orange peel is indeed very tough and time consuming, and dangerous. I have been doing it for quite a while now trying to get a satisfactory job done. Not fun at all!!! As for the large panels, I like to lean them against the wall vertically. I turn them around every couple of coats waiting about 2 hrs or so for the last coat to dry before I do. I haven't had any trouble yet. Even when I was unknowingly spraying great gobs of liquid out of my wrongly orificed gun. It was, however, prone to drip that way :-( I prefer not to hold the gun horizontally if I can avoid it. I had such trouble with the soundboard because it was prone to spit. Luckily OPSL flows quite well. Did I miss anything? Cheers! Greg Farrell wrote: > Well Mark, these couple posts have gotten me thinking that I need to get my > gun (spray) out and take another stab at shooting something (if it doesn't > work, maybe I'll take my 12-guage to it!). What kind of pressure are you > running AT THE GUN? I would love to figure out a way to eliminate or > drastically reduce the orange peel. > > When I wrote before that I had finally found sucess, I was referring to > rubbing out a finish on that did not have witness lines. The orange peel can > be sanded out, but man, that is a lot of work, and you always have the risk > (reality) of sanding through in spots. > > Question for Greg and Mark. When spraying a piano lid, do you hang the lid > vertically and spray both sides at once, or do you lay it horizontal and > spray one side at a time. If you lay it horizontal, how long do you wait > before flipping it over? If horizontal, do you put all your coats on one > side, and then start coating the other side? Thanks. > > Terry Farrell > > ----- Original Message ----- > From: <bases-loaded@juno.com> > To: <pianotech@ptg.org> > Sent: Friday, September 07, 2001 7:28 AM > Subject: Re: Oxford Premium Spray Lacquer > > Hi Greg - > > I use an Accuspray conversion gun (HVLP, but runs from a compressor), and > have been using a .036 needle/nozzle set with a #7 air cap. Little or no > orange peel. > > Mark Potter > bases-loaded@juno.com > > On Thu, 06 Sep 2001 22:51:02 -0400 Greg Newell <gnewell@ameritech.net> > writes: > > Greetings fellow listees, > > I'd like to relate an experience I've been having for far too > > long. > > I've been trying to refinish a piano and As Terry Farrell > > experienced > > too, there was a great deal of orange peel. Finally I have found the > > correct solution (for me). > > It seems that I was using the needle, nozzle and air cap that > > came > > with my Accuspray turbine and gun unit. I was assured that this was > > what > > i needed for the task I was trying to perform. I just recently, on > > the > > advice of a different salesman who's company also sells these units, > > changed all three parts to near the smallest orifice parts made for > > this > > gun. It seems that water based lacquer has very small solids or > > something like that. Anyway it worked like a charm. I have been > > trying > > to achieve a solution based on other things like too high a > > temperature > > and adding retarder, too fast a delivery, too slow a delivery, > > product > > too thick (that one didn't seem right) and a host of other worries > > involving spray conditions. The new gun parts changed everything and > > all > > things are now as they should be. > > I write this only to give a "heads up" to others who may be > > spraying > > water based for the first time. It seems a very high atomization > > rate is > > in order. Straighten that out before you begin and you will have > > saved > > yourself a great deal of time, believe me! Oh! and don't use steel > > wool > > with water based products either. Go ahead, ask me how I know. > > > > Best, > > Greg > > > > -- > > Greg Newell > > Greg's Piano Forté > > 12970 Harlon Ave. > > Lakewood, Ohio 44107 > > 216-226-3791 > > mailto:gnewell@ameritech.net > > > > > > -- Greg Newell Greg's Piano Forté 12970 Harlon Ave. Lakewood, Ohio 44107 216-226-3791 mailto:gnewell@ameritech.net
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