Varnish is a transparent, protective coating that can be sprayed with a spray gun. They are typically composed of a solvent and resin that are mixed together. The solvent dries quickly, while the resin binds to it, creating an impermeable finish that can protect the surface from water and dirt.
The painters use an HVLP paint sprayer for spraying varnish onto the surface. In this process, care must be taken to avoid over-spray and dripping onto unwanted areas of your project.
This article will discuss the steps of how to apply varnish with an HVLP spray gun as well as some other considerations you should take into account.
What Are The Functions of Varnish?
Varnish is always based on two factors; a binding agent and a solvent. During the drying process, the solvent evaporates and a non-volatile component is left behind. The varnish accomplishes the following main functions;
A coat of varnish can protect the surfaces from the bad effects of weather, stress, and many other external influences.
- #1: A coat of varnish always beautifies the surface with glittering color and shining.
- #2: A coat of varnish always gives specific properties to a surface.
- #3: A coat of varnish makes a glossy layer that can guarantee an even application.
- #4: Spraying varnish with an HVLP spray gun saves your time and effort.
Here is the video tutorial for more information about Varnish;
How To Spray Varnishes With HVLP?
If you have decided to spray varnish with the WAGNER paint sprayer, follow the under-given steps, and make sure that you are spraying varnish perfectly.
#1. Object Preparation
While spraying varnish with an HVLP sprayer, cover the surrounding things with a dust sheet to keep them safe from drops of liquid.
If their falls paint drops, dirt, or dust, wipe them using a cloth. Sand the surface to make it rough because the varnish only sticks onto a well-prepared surface. Otherwise, it will peel off quickly.
#2. Dilute The Varnish
For spraying varnish with HVLP to achieve as smooth coverage, you have to dilute it before it is sprayed. You can use the stirring rod for this.
Just pour the varnish container, hold the stirring rod and move it as you are writing eight. If it is thick, add water again and stir well.
#3. Preparing And Setting The Device
When you start to set up the gun, you have to take care that every spray gun’s adjustment is according to its own system.
If you want to spray varnish with HVLP for the first time, you should start with a low volume of material and when you have some practice you can increase the amount.
When your settings process is complete, test your sprayer on a piece of cardboard.
#4. Spray The Varnish
If you are spraying a large surface, spray a cross-wise pattern (spray first on a horizontal layer, and then a vertical layer).
Keep an even distance between the surface and the gun. Hold the spray gun at 90 degrees.
#5. Clean The Gun
When you finish your work, clean your HVLP sprayer using a suitable cleaning product, like water or a solvent. If you don’t clean it, the varnish will congeal inside the nozzle and clog the gun.
So always clean your gun immediately and preferably after using it.
#6. Personal Safety
When you start spraying varnish with an HVLP sprayer, it is very necessary to wear protective clothing. Use the safety goggles and fully covered mask.
Conclusion
Varnish is a protective, decorative, and glossy coating that can be sprayed with a spray gun.
For applying varnish on a surface, spray guns are great tools in the hands of painters rather than brushes. Spraying varnish with an HVLP spray gun saves time, labor, and money.
