Glow in the Dark Spray painting is a method of painting on surfaces using either a spray can or spray paint gun. It is a quick and fast way of painting on any surface. Spray painting also produces the most even and professional looking painted surfaces. But as with everything, there are some good and bad points.
Table of Contents
Pros and Cons of Spray Painting
|– Faster painting time
– Faster drying time
– Smooth finish
– No brush or roller marks
|– Cleaning takes a lot of time
– Preparation takes more time
– More paint wastage
– May need a compressor (costly)
What is spray painting?
Spray painting is done by blowing tiny droplets of paint at high pressure. Approximately 70% of these droplets land on target, the rest land on the surrounding area. Depending on the nozzle adjustment, this area can be quite large. A small amount stays suspended in the air and lands on the floor eventually.
Spray Painting Results
Spray painting produces a smooth finish in a shorter amount of time when compared with rollers or brushes. Reason is because the volume of paint applied is more when spraying. One pass of a spray gun is equivalent to 2 passes of a roller. The finished surface looks much better too.
Techniques of Spray Painting
In order to achieve a smooth and even result when spraying, there are some techniques you need to know.
- The sprayer must always be in motion when spraying.
- Best practice is to start moving the sprayer first before actually releasing the paint.
- Never spray continuously in one spot.
a) Paint will flow and streak
b) Unevenly painted surfaces tend to crack when dried
- Always spray a test patch first in order to gauge the best distance and speed required to achieve a smooth surface.
Spray Paint Wastage
An average of 20 to 30% paint is usually wasted during the spray painting. Wasted paint ends up on the surrounding areas and on the floor. If you are spraying in a windy area, paint droplets may even land behind you.
Spray painting is fast and the results are great, but you need to have extra paint on hand. If the paint coverage is rated at 3 square meters per litre, increase the amount needed by 50%. In this case, it would be 1.5 litres for 3 square meters.
Spray Painting Preparation
Whether you are painting a room or an object in a room, be sure to cover the entire area with plastic sheets first. This is why spray painting requires a longer preparation time.
If you are painting outdoors, pay attention to the wind direction or you could end up adding a light ting to your neighbor’s property.
Cleaning of Spray Painting equipment
Spray Paint Cans
Just remove the nozzle and soak it in an acetone solution for 5 minutes. Shake it around in the solution to ensure the solution goes through the nozzle and all the paint residue.
Spray Paint Gun System
Cleaning of Spray paint gun is a bit more technical and is best demonstrated in a video.
Beginner Tutorial How to Set Up and Use a Paint Spray Gun (Video)
How to Clean a Spray Gun “Properly” (Video)
Glow in the Dark Spray Painting
All paints are made by mixing colour dyes into a clear or white base paint. Glow in the Dark paints is the same with one big difference. Instead of using colour dyes, we use glow in the dark powder.
Glow spray paint texture
Glow in the dark powder has rough sand like texture because it is made from crystals. When mixed with paint, these crystals do not dissolve but stay suspended in the paint. If the paint is left to stand or stored overnight, the powder particles would sink to the bottom. That is why it is important to constantly stir the glow paint during the painting process.
Finished Painted Surface
Since most paints are smooth, the finished surface will also be smooth. This is not so with Glow in the dark paint. The texture of spray painted glow surfaces would be slightly rough to touch. Great for creating anti slip surfaces. But if this is not the desired end result, you could always spray a clear coat over the painted surface.
Glow painting method
Method of painting with glow paint is also different from normal colored paints. Read more about How to use Glow Paint.
Glow Spray Paint Nozzle Size
Glow in the Dark paint is slightly rough in texture because the glow powder particles are like fine grain sand. For spray painting, we recommend using the smallest glow powder particle size which is 10 ~ 20 microns for spray painting.
Glow in the dark spray paint is heavier than normal paints. So it would be best to use a nozzle with a large tip size of around 1.7mm. Read more on selecting the right nozzle size here.
Types of Paint Spraying Machines
High Volume Low Pressure (HVLP) Paint Sprayers
- HVLP Paint Sprayers use a compressor and turbine to atomize the paint.
- Low pressure spraying around 10 PSI
- Less over spray (uses less paint)
- Smoother finish with more control on the flow
- Needs paint mixture to be thinned before
Airless Paint Sprayers
- Airless sprayers use a pressurized pump and piston to siphon paint through a nozzle.
- Very high pressure spraying around 2,000 PSI
- Large overspray (uses more paint)
- High pressure spray requires better hand control
- No thining of paint required. Works well for
Visit Difference between HVLP and Airless Paint Sprayers for more info.