Wonder why it's so smooth? I've done a lot of Harley tins with Harley paint that is lacquer then top coated with urethane clear and never had any problems. Why? It is all a matter of what you are looking for in your guitar. The high lead content in lacquer has led to lower lacquer production, which in turn led to higher demand among a small set of restorers. Second, polyurethane is not the best choice for painting over lacquer finishes. Just don't cut thru the urethane, that would be the only issue. now this was bulk acrylic lacquer that I sprayed on, then spayed 2-3 coats of clear lacquer. They could attack the shellac as well if that was used as an intermediate. Never paint any urethane over lacquer primer. I painted my GTX with lacquer and a clear enamel over it in the 80s it lasted about 10 years and then started to look shabby. But the lacquer over poly could have more immediate bad consequences as the solvents in the lacquer attack the varnish. General Discussion. The drying process is much slower than urethane paints and leaving a coat to sit for 24 to 48 hours before applying another coat is recommended. If the urethane clear is cured and isn't scratched or sanded thin you can shoot lacquer over it without any worry of lifting. Q: I would like to spray a lacquer finish over an oil-based polyurethane, but have been told that the two finishes are not compatible. Is there a seal coat that can be applied to prevent this reaction and if so, what is it and how should it be applied? Either way, when done right you can hardly tell a difference in the two. Be sure to follow me on Instagram https://www.instagram.com/caraddictgarage/ for quick updates. Baked alkyd-butyl and butyl coatings looked good after two years of open exterior exposure. Question I'm a contractor with various guys coming and going over the span of this 4 year custom house we're building. And it works greatâ¦a few of the original cherry boards are over 10 years old. ... you'll have to spray a solvent-based clear over an Auto-Air basecoat. Correspondingly, can I put urethane over lacquer? That is why the light sanding or scuffing with 600 is all that is needed. Painting a car makes it look new again. Identifying the finish on wood floors or furniture is necessary if you plan to strip and refinish the wood surface. You didn't say if the urethane is clear. It's more flexible, arguably equal to or better gloss, and excellent UV protection when cleared. Polyurethane and lacquer are two of the most popular finishes for wood. Instead, use an alkyd v Lacquer over Urethane on Site A builder gets advice for using a shellac inter-coat to isolate a lacquer top coat from already-applied urethane. Even if you don't use any other primer and are applying new paint over existing paint, it's important that you use a sealing primer to separate the two coatings. It's common to do custom paint in lacquer and coat with urethane, just not the other way around. There would be no problem spraying lacquer over the urethane, no problem what so ever. When I use urethane, I keep it as thin as possible. No, you don't want lacquer over urethane. Its 2013 avoid lacquer if possible and use a urethane single stage or urathane base coat clear coat you will have a more durabale stable end product. 02-03-2010, 06:22 PM. Greg Williams: The best Iâve used is ⦠View Full Version : Urethane clear coat over lacquer paint? They are made of solid oak facings with the sides oak veneered plywood. urethane over lacquer. wildone | Posted in Finishing on January 29, 2002 12:48pm * We have a bookcase combination consiting of four units with a clear lacquer finish. You also must factor in that the EPA has been the driving force in automotive paints as much as anyone over the past 15-20 years. Today's lacquers are available in both spray and brush-on styles, but both have the advantage of being among the fastest drying of all woodworking finishes.Brushing a lacquer finish requires a little more time and effort, but is probably a little bit cleaner than spraying. (Ohâ¦I waxed the boards too.) It's not compatible. On a vintage recreation or restoration I want lacquer. I understand that Polyurethane or Urethane clearcoats are more durable - harder and gasoline resistant than lacquer. It is extremely durable and resistant to damage; however, over time it can begin to discolor and become scratched. If you want to learn how to paint your own car, this is the place! This is why it is best not to mix and match systems or ⦠Is there anything special I have to do to spray Urethane over a lacquer primer. It will bubble or peel eventually. Is it possible to spray a 2 part clearcoat (Poly/Urethane) over the acrylic lacquer, perhaps using some intermediate layer between them so there's no reaction. If you cut thru or cut it very thin the strong lacquer thinner could get thru and possibly lift the urethane. Unfortunately, lacquer is also known to peel and discolor over time. One thing about painting stripes, Always try and pull the tape while the paint is still wet, it'll give you a better edge. A quick guide to wood finishes - what to use, and when to use them. I just finished the body work on my 46 Hudson Pickup truck. They are both relatively easy to apply and clean up. It's a different material and will very likely peel in a few years or less. Manufacturers make polyurethane from synthetic resins ⦠Make yourself at home...read, ask and answer ... could have been from a spray can we or the o/p has no idea. Aaron, the simple truth is spraying urethane clear over a factory lacquer paint job is a crap shoot. But the spar was applied over oil, primarily. General Discussion. 2k primer should go over lacquer primer with NO problems. The other general class of oils are Non Drying Oils. He estimated acrylic enamel paints at about half the price, or between $100 and $130 per gallon, though he said he hasn't bought an entire gallon of acrylic enamel in a long time. As with all primers, proper surface preparation and weather conditions must be ⦠For me its simple. No real reason to use lacquer primer anyway. 2k Urethane over lacquer. This means that you might be facing frequent maintenance, but it should be relatively easy to touch up . I tape off my stripe as ⦠If it's not, shoot it with another coat of clear urethane. Lacquer clear sucks in the sun but lacquer paint can be wetsanded and buffed to a mirroe finish rather quickly, then cleared over ⦠In short; you CAN apply a lacquer or a polyurethane over a Danish oil. This should make sense, because once dried, the oil has cured to a hard solid film surface, and stuff will now stick to it. PeaceKeeper. I just looked at a tank and fenders I did about 12 years ago and I was even amazed, they looked perfect. Paint products adhere by chemical or mechanical bond, or sometimes both. However, for specialty applications like marine or automotive, there are additional considerations. However, there are distinct advantages to using each. The HD color match paint is lacquer, yes, 1970s locquer. Acrylic lacquer paints can be costlier than acrylic enamels. It's applied via a sprayer, because it is thinner than the other finishes. Automotive paint resins are usually one of the following three chemical compounds: lacquer, enamel, or urethane. Unlike polyurethane, where you must sand the surface in order to apply a new coat, lacquer is generally thin enough that a new coat can be sprayed over the surface without the need for this. 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