How to apply spray paint ?

If you want to equal the results of spray painting, the method of application closest thing to it is spraying paint with a spray paint can. Painting with a spray paint allows you to deposit a homogeneous, smooth and mark-free paint film on a surface.

You can find any type of spray paint product:

• primers
• paints
• strippers
  
• Clearcoat
  
• degreasers

Tutorial for painting spray paint and getting the best results

How does spray paint work?
A paint can is a container that contains paint and propellant gas under pressure.

As with a spray gun, the paint is projected under pressure into a very fine nozzle, which will atomize the paint into a cloud of micro-droplets, projected onto the surface. Unlike the roller or brush technique, only the paint touches the support, which avoids marks, reduces consumption and improves drying.

Tutoriel: 7 règles pour peindre avec une bombe de peinture

Can we obtain the same results and the same quality as those obtained by a body painter ? The answer is yes, perfectly. Provided you paint small surfaces and respect a few gestures and techniques.

• 1. Shake the paint can well before painting: shake the aerosol for 30 seconds and make sure you can hear the metal ball. This allows the pigments to be mixed
• 2. carry out a test spray on a surface. If there is a problem, press hard on the nozzle, check that the paint channel is not blocked, invert the aerosol and purge, and try spraying again.
• 3. Practice movements from left to right then from right to left. Do not cross layers horizontally and vertically. The speed of movement of the aerosol must be regular and well adjusted: if the movement is too fast, the layer of paint applied will be too thin.
• 4. Always maintain a fair distance (10-15cm) and an angle of 90° in front of the support. The painter's wrist must be flexible and follow the reliefs of the surface.
• 5. You must completely press the aerosol propellant button. It is not possible to dose the spray. To make thin layers, you need to make rapid passes.
• 6. Every minute, wipe the rim of the aerosol, or paint may build up. This helps prevent drops from splashing onto the surface.
• 7. Drain paint cans upside down after use. This avoids drying blockages, and allows you to reuse the aerosol without problem.

Painting large surfaces with spray paint

Painting many layers and painting over large amounts of surface area can quickly create pain and fatigue on the finger. In these cases, we recommend using a plastic aerosol handle to improve grip, eliminate fatigue, and even to measure the thickness of the layers.

2 types of nozzles

There are mainly two types of propulsion nozzles for aerosol paints: The flat jet nozzle: it propels a flat and triangular jet, which allows you to paint all types of flat and curved surfaces like a spray gun to paint.
The round jet nozzle: it sprays the paint in a concentrated and round manner (maximum spray width of 8 cm). This type of nozzle is particularly suitable for losing a frame, a gate, a bicycle, or any tubular shape.

Car paint spray 1C or 2C

As with body paints, among the car paints in 1K or 2K spray paint, there are single-component pearlescent and metallic paints on one side, and two-component lacquers and varnishes on the other.

Metallic and pearlescent spray paints are fine, one-component paints (1C*). They dry very quickly, they have a matte appearance, and they must be covered with a transparent varnish.

Lacquers and varnishes are shiny and resistant finishing products. All professional versions are two-component aerosols (2C*).

The difference in application
→ For 2C paints and lacquers, use slow strokes to create shiny, thick coats, with 7 to 10 minutes of drying time between each coat. Always apply 2 coats.

→ For 1C pearl and metallic paints, make quick passes to create thin layers, with 2 minutes between each coat. Apply as many layers as necessary until maximum coverage is obtained.

2C two-component aerosols

Stardust in fact offers containers with hardener that can be triggered with a button. This has the advantage of creating extremely resistant paints. The disadvantage is that the product is single use with a shelf life of 1 hour once the button is pressed.

Stardust indeed offers containers with hardener to trigger with a button. This has the advantage of creating extremely resistant paints. The downside is that the product is single-use with a lifespan of 1 hour once the button is pressed.

Aerosol capacities

In France and around the world, paint cans contain one part paint to 3 parts propellant gas to put the container under pressure.
Clearly, this means that out of an announced total of 400 ml, the actual content of products, varnish or paint, and in reality 100ml.

In summary, the aerosol is a very practical piece of equipment that allows anyone to spray paint without any equipment, connection or cleaning. On the other hand, it is not the most economical method of painting.

Security
It is important to take maximum precautions when using an aerosol. Most paint coupons contain an extremely flammable gas. Paints must therefore be sprayed away from any source of heat or inhibition. You also need trees in a space with enough air circulation to extract the gases.

Painting with an airbrush
Chroming machine
Painting with a gun