Hi Terry - Sorry for the lack of specifics.... My Accuspray gun is designed to require 80-90 PSI delivered to the gun from the compressor. Then, at the mini-regulator at the gun handle, I step it down to about 6 PSI, as I indicated. By thinning a finish 5% or less, and using the nozzle/tip/air cap arrangement I listed before, I get extremely good atomization. Clearly, your gun is set up completely differently. My Accuspray is a bit of an air hog, as an older generation HVLP conversion gun,but I have a big enough compressor to handle it quite easily. I think your gun is a newer generation HVLP that requires a lot less air to spray well. I have heard nothing but good things about the ECO/S gun, from quite a few refinishers. You are right that tearing down the Accuspray gun is a bit of a chore, but I only do it at the end of each refinish job, and it only takes me about 5 minutes to tear it down, and let the parts soak in lacquer thinner, then about 5 minutes to put it back together. Practice makes perfect, eh? During a job, like you, I just run water thru it after each spraying session. Yes, I thin the PSL about 5% water, maybe less. I have also used their Oxford Hybrid Varnish, which is a very attractive acrylic/tung oil hybrid. It sprays a little differently, but gives the wood a warmer look than any other water based product I've used, I suppose because of the oil. Not appropriate when wanting to rub to a sheen higher than satin. I use it on uprights mostly, although lately, in my never ending insistence on trying new finishes, I have been using Aquacote products with very good success. They are located close to me in Ohio, which is a plus. I have been hearing some pretty amazing reports about a new water based finish from Dave Fuhr, I think it is, that is supposed to rival Nitrocellulose in its ability to level out. I think Jeff J is or will be carrying it. Mark Potter bases-loaded@juno.com On Sat, 8 Sep 2001 08:58:22 -0400 "Farrell" <mfarrel2@tampabay.rr.com> writes: > Hi Mark. Just curious if you have any input on this - I run my gun up > around > 25 or 30 PSI. Any idea for the discreptancy between the two? Where > are you > measuring air pressure - at the gun or at the compressor? When I run > the > pressure down, the effect is that the fluids come out at a very low > pressure/rate and do not appear (my visual judgement) to atomize > much at > all. With the pressure up high, it really atomizes. I am using an > Asturo > ECO/S gravity feed gun. It was recommended to me by Jeff Jewitt. I > was not > having success with my turbine-Accuspray, and the Accuspray gun > drove me > nuts when trying to clean - what a job! The Asturo requires > absolultely no > dissassembly - you just run a tad of warm water through it and it is > clean > as new. > > Do you thin your PSL? Have you tried any of their other finish > products? > > Terry Farrell > > ----- Original Message ----- > From: <bases-loaded@juno.com> > To: <pianotech@ptg.org> > Sent: Friday, September 07, 2001 3:14 PM > Subject: Re: Oxford Premium Spray Lacquer > > > > Hi Terry - > > > > On Fri, 7 Sep 2001 08:01:38 -0400 "Farrell" > <mfarrel2@tampabay.rr.com> > > writes: > > > What kind of pressure are you running AT THE GUN? > > > > app. 5.5 - 7 psi, depending on the material, and a rather > bewildering set > > of 'intangibles' that just might include how Mercury is aligned > with > > Mars.... hard to tell sometimes. Whatever works best, of course > is the > > glib answer. Believe it or not, to some degree I think I > calibrate it to > > the way it 'sounds' coming out of the gun. Sounds like I've been > > overcome by fumes, I know, but there IS a certain sssssssssss > sound that > > ssspellsss ssssuccesssss when ssssspraying. Actually, probably > 80% of > > the time I have it set at 5.5 - 6. > > > > > > > > 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. > > > > Horizontal. I'm not in that big a hurry. > > > > > > >If you lay it horizontal, how long do you wait before flipping > it over? > > > > > > At least 3 days, sometimes as much as 7 if I'm busy with outside > work. > > > > > > >If horizontal, do you put all your coats on > > > one side, and then start coating the other side? > > > > Yes. > > > > Mark Potter > > bases-loaded@juno.com > >
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