London Spray Finishes
Lacquer is often recognized as the greatest all-around wood finish. You won’t find any finish that dries as quickly, rubs out as easily, and imparts the same clarity and color no matter how hard you look. It normally dries in 15 minutes at room temperature. This means you can apply the initial lacquer coating, sand, then spray up to two more coats in around an hour. Other finishing products take hours to dry correctly. Oil-based stains dry the slowest, taking up to 72 hours to dry. Lacquer is easy to use. It is ready to use right out of the container and is light enough to spray with nearly any form of air equipment. It usually doesn’t need to be thinned, and if you choose to brush it on, it glides down flat with minimal obvious stroke lines and cleans off easily with lacquer thinner.
Lacquer is a tough substance. It lasts as long as or longer than any of its competitors without flaking or peeling. Lacquer lasts for years without yellowing like varnish, polyurethane, or shellac. Lacquer is thinner than other treatments, allowing it to penetrate deeper and give a long-lasting coating that protects the wood from the inside out.
Lacquer doesn’t require more than two coats to achieve a nice gloss. This reduces the amount of buildup as well as the cost. Lacquer is significantly less expensive to purchase than varnish, shellac, or polyurethane, and requires far less labor. It’s also adaptable, with three finishes to choose from: dull, medium, and high-gloss.
FIVE TYPES OF LACQUER FINISHING
Lacquer wood finishes come in a variety of styles. Although all lacquer finishes share some of the basic properties, there are some significant variances between them.
1. Urushiol-based Lacquers
The original lacquer was a varnish resin generated from the sap of a Chinese and Japanese tree whose active component is urushiol. It has a very hard and durable finish and is highly resistant to water, alkali, acid, and abrasion. They are distinct among lacquers in that they dry slowly and are water-based. Furthermore, they require warmth and humidity to fully set, as they require oxidation and polymerization rather than just setting from evaporation, as other lacquers do.
2. Nitrocellulose Lacquers
Nitrocellulose lacquer is created by combining fast-drying solvents with cellulose-containing wood and cotton pulp that has been broken down by nitric and sulfuric acid. They were developed in the 1920s and were frequently used in vehicles because of their quick-drying nature and ability to provide for a wide range of brilliant colors. They are also typically found on wooden goods and musical instruments. Because they dry so quickly, they are best sprayed using a spray gun and may be difficult for a novice to apply uniformly. Nitrocellulose lacquer is reasonably priced and dries rapidly. Cure resins give a pretty excellent protective film layer over the wood. It rubs away easily when the hard film cures, and its somewhat amber tint adds a warm, appealing patina to both light and dark woods. Furthermore, because it is an evaporative finish, each fresh layer of lacquer mixes into all prior applications, making it simple to fix.