Removing Varnish
Adding layer after layer of varnish to a surface depletes the aesthetic value of the surface. Much of the original detail will be lost with each layer. If you want to enhance the look of the original surface, you will have to remove varnish prior to re-varnishing the surface. This process is time consuming and very detailed.
The best way to remove varnish is by using paint thinner. When you use paint thinner, you should work in a well ventilated area and wear protective equipment. Gloves, goggles and a respirator are all necessary.
When you remove the varnish, you should apply the paint thinner directly onto the surface. The paint thinner should completely coat the surface without spilling over onto other surfaces. However, trying to scrimp on the paint thinner is a common mistake that you shouldn’t make.
Once you apply the paint thinner, you will have to allow it to work. Now, paint thinner dries fairly quickly, which presents a problem. In order to prevent this, you should cover the entire area with aluminum foil. This will keep the air out and the moisture in, which prevents the paint thinner from drying.
Removing the Varnish
After the paint thinner has had a chance to penetrate the varnish, you can remove the varnish in a few ways. The way you choose is dependent upon the delicacy of the surface, as well as the amount of time you have to work with for your project.
Putty Knife
If the varnish is thick and the surface isn’t delicate, you can use a putty knife to remove the layers of varnish. To do this, gently push the putty knife into one layer of varnish. Take care not to ruin the surface itself. Push the putty knife through the varnish. It should peel up. In some cases, it may look like a blob at the end of the putty knife. Once you have made a complete swipe from one end of the surface to the other, start on a new row of varnish that should be removed.
Steel Wool
You can use steel wool to remove layers of varnish. This is a good option for areas that cannot be cleaned with a putty knife. However, this method will take longer than using a putty knife. As you work with the steel wool, be careful not to apply too much pressure to the surface, and work in a circular motion. This helps to minimize the possibility of scratching the surface.
Toothbrush
If the surface you are removing varnish from is intricate or extremely delicate, you can use a toothbrush to remove the varnish. Work in a seesaw motion. Take care not to press too hard, as doing so may make fine lines on the surface.
Here We Go Again
After you have cleaned the entire area, evaluate your next step. If there is still varnish on the surface-which is a definite possibility-start all over again by applying more paint thinner. However, if there isn’t any varnish left, wipe the surface with a damp cloth. Once it is dry, you can re-varnish the surface.
