Del, Terry, List I've added water based lacquer to my finishing and along with it new equipment. I have a 5 hp compressor feeding an Asturo Spray Gun model BBS fitted with a 1.7mm tip. I sprayed the Oxford Premium Spray Lacquer right form the can. I did an ebony grand but used tinted clear rather than black lacquer. To me it has more depth. Since this was my first use of water based, I had expect some differences and got them. The gun allows you to control fluid, pattern And air pressure. Line pressure was controlled from the filters. The lacquer raised the grain a little but no worse than solvent based. Some air bubbles were evident but cured by adding about 2% retarder. You can go up to 5% if necessary. This also improved flow out. At first my air pressure was too low, causing a coarse application, but it flowed out better than I thought it would. I only sanded between the first and second coat with 3M's 216u FreCut Gold Sandpaper. One sheet did the entire 7' grand. Then I applied successive coats, increasing the air pressure until I got the desired atomization. This step is intuitive. I can't tell you pressures or feed rates, just practice. I built up about 8 coats about an hour apart, not sanding between them. There was a fine line between a full coat and sagging. But I was pleased with the flow out of each coat. I hang as many pieces as I can to reduce dust contamination. The piano sat for 24 hours, then cutting down and buffing began. Any sag or ruff spot was easily leveled with the 216u backed with a wood block. After sanding, the finish was rubbed with 4F Pumice. I never cut through-save a couple of edges-and got 100% burn-in between all coats. I inspected the piano 8 days after delivery and found no change in the finish. My conclusions: It took me too long the come up with the right delivery. I'm ordering a finer tip. I'll be thinning the finish about 10% and use retarder about 2%. Very low odor and over spray, greatly reduced the volume of exhaust air. Sands better than nitro-lacquer; seems to be a harder film. The gun works well; very easy to clean, especially the fluid filter. The gun is very versatile; I think it will meet all needs including spot finishing I'll never use anything but 3M 216u sandpaper. Other misc. reasons. I purchased the gun, lacquer, and sandpaper from Jeff Jewett at Homestead Finishing, P.O. Box 360275, Cleveland Ohio 44136-0005 www.homesteadfinishing.com Paul Chick ----- Original Message ----- From: Delwin D Fandrich <pianobuilders@olynet.com> To: <pianotech@ptg.org> Sent: Saturday, September 08, 2001 10:48 AM Subject: Re: Oxford Premium Spray Lacquer > Was anybody going to comment on Oxford Premium Spray Lacquer on this thread? > > I can just imagine somebody asking a question about spray guns in six months > or so and being told to "check the archives, there was a big discussion > about this six months ago." It would take a skilled clairvoyant to find it. > > I keep kind of monitering it to see if there might actually be some > discussion about Oxford Premium Spray Lacquer.... > > Del > >
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