If you are planning on refinishing a wood surface, you may be wondering whether you can use a wood finish over stained or waxed wood. This is an important question because you don’t want to apply a coating that doesn’t look good with the current finish. You also don’t want to end up with streaks of the old finish or a paint that doesn’t look right.
Oil-based stain
Oil-based stain is used to give wood an extra protective layer. It also provides moisture-wicking protection and a professional finish. If applied correctly, oil-based stains will last for a long time. However, they can be messy and difficult to work with. The most important thing is to follow the manufacturer’s instructions on the safest way to apply and clean up the stain.
Oil-based stains should be applied in a well-ventilated area. They are best applied on outdoor structures and should be stored properly.
Oil-based stains contain volatile organic compounds (VOCs) that are dangerous to human health. After the stain dries, VOCs are emitted into the air. These chemicals are a major cause of smog and can lead to many health problems.
When you’re applying the stain, make sure your brush and rag are both free of oil-based pre-stain. You should use mineral spirits to clean your brushes after you apply the stain.
French polishing
French polishing is a process that gives wood a high-gloss finish. This finish is popular for guitars and other instruments because of its mirror-like luster. While it is a very beautiful finish, it requires a lot of work. If you are considering attempting to apply it yourself, there are a few key points you should know.
The first step is to remove any oil or wax from the surface of the wood. This can be done with a fine sanding pad.
Next, you need to prepare the surface for the polishing process. This is often accomplished with a fad. A fad is a traditional French polishing tool. It consists of a cotton rag wrapped around a piece of cotton wadding.
Another useful tool is the thixotropic grain filler. This sanding material is designed to be applied into the open grain of the wood and then lightly sanded with a fine sanding pad.
Spray-on vs brush-on
A clear finish on wood protects it from wear and tear. It also adds depth. You can apply this finish to raw wood or over a stained finish. It should be applied in a dry, well-ventilated area and away from children and pets.
Clear finishes are often easier to clean. Dust can be removed with a damp rag or vacuum. However, if the surface has a lot of rough natural fibers, it may be difficult to remove dust.
Unlike a stain, a clear finish does not soak into the wood. It can be cleaned with soap and water.
When applying a clear finish to a wooden surface, you can choose from a variety of products. The type of clear finish you choose should be based on your requirements. Water based finishes offer the quickest drying time. But, you will need to clean the surface between coats.
Using a brush is an effective way to apply a polyurethane finish. Brushing is more labor-intensive than spraying, but it can provide a more even and less messy finish.
Identifying the existing finish
If you’re refinishing your wood furniture, you’ll need to know what kind of finish is on your wood before you begin. You can do this using some simple tests. But be careful – you don’t want to damage your wood finish.
One easy way to identify the type of finish on your wood is to scrape a small piece of it with a piece of paper. If it crumbles when you do this, it’s probably a urethane/polyurethane finish. On the other hand, if it does not crumble, it’s most likely a varnish or shellac finish.
Another test is to use a small amount of denatured alcohol on a piece of wood. Then rub it with a clean rag. If the finish dissolves, it’s a lacquer. A few minutes later, wipe it off with a white cloth. This will leave a yellowish brown stain.
Some finishes can be re-stained over, but you’ll need to remove the old stain first. For example, you can stain over a dark stain, but you won’t be able to make a light stain darker.
