Problems with KUDO® aerosol paints usually come from reading the instructions carelessly or from ignoring the basic rules of spray painting. The common mistakes below, and the ways to deal with them, let even an inexperienced user avoid trouble and enjoy the job.
The shade has changed
During long storage the pigments that give the paint its color tend to settle at the bottom of the can. The mistake is shaking the can too gently or for too short a time: the contents have not been mixed into a uniform emulsion, and that is what causes the problems described above.
How to fix it: shake the can vigorously for 2–3 minutes, as the instructions say.
The valve is clogged
After the previous use the can was not turned upside down to clear the spray head, and the paint dried inside the spray head channel.
How to fix it: find a new spray head — dried paint inside the head cannot be dissolved — but it is better not to forget to clear the head after use.
Nothing comes out of the can
The can may be held upside down, or tilted more than 45° off the vertical. In that position the propellant escapes from the can without carrying the paint out with it.
How to fix it: bring the can back to the upright position or tilt it only slightly off its axis.
The can has been stored for too long and is past the shelf life of the aerosol package.
Unfortunately, there is no way to fix this one.
The sprayed paint covers the surface poorly
The distance to the surface has been chosen wrongly: most of the paint turns into overspray instead of settling on the surface.
How to fix it: find the best distance to the surface for the conditions you are painting in.
The ambient temperature is low.
How to fix it: avoid painting at low temperatures and in rainy or damp weather.
The surface picks up grit and other foreign particles while it is being painted
Painting is done outdoors in windy weather, or there is too much dust suspended in the air.
How to fix it: find a well-ventilated but draft-free space to paint in, or wait for calm weather.
The surface was not cleaned of dust properly, or it holds a significant static charge and attracts dust.
How to fix it: clean the dust off the surface more thoroughly and remove the static charge by grounding the part.
Crater-like defects appear on the surface during painting
The surface has not been cleaned well enough and still carries spots of wax, grease, silicone or polishing compound.
How to fix it: degrease the surface thoroughly with KUDO® silicone remover, testing it first on an inconspicuous area of the part — especially if you are painting over an old finish. Some paints can be dissolved by silicone remover.
The finish has an uneven gloss: glossy areas alternate with matt ones
The paint is applied to a surface that is too porous and soaks in immediately.
How to fix it: porous surfaces must be primed with several (2-3) coats. Use KUDO® multipurpose aerosol primer for this.
The painted surface lifts and wrinkles badly
The paint being applied is not compatible with the coating already on the surface.
How to fix it: remove the old finish completely, mechanically or with KUDO® paint stripper.
Runs and sags appear on the painted surface
This defect appears mainly on vertical surfaces.
The coat of paint applied is too thick.
How to fix it: avoid runs and sags, follow the instructions and apply two or three coats with the recommended flash-off time between them.
Painting is done from too close a distance.
How to fix it: spray from the distance given in the instructions — 25-30 cm from the surface.
Painting is done at an ambient temperature below the one recommended in the instructions.
How to fix it: follow the instructions and do not try to paint at ambient temperatures below +10 °C
Small bubbles form on a horizontal painted surface
The coat of paint applied is too thick.
How to fix it: avoid runs and sags, follow the instructions and apply two or three coats with the recommended flash-off time between them.
The surface being painted is too hot.
How to fix it: keep the temperature of the surface close to the ambient temperature (it is best to paint in the shade). Remember that painting objects that are too hot can set the paint on fire.
Orange peel and cracking appear on the painted surface
This defect shows up more often on horizontal surfaces.
Too thick a coat of paint is applied to a surface that is too hot.
How to fix it: avoid runs and sags, follow the instructions and apply two or three coats with the recommended flash-off time between them. Make sure the temperature of the surface matches the ambient temperature (it is best to paint in the shade). Remember that painting objects that are too hot can set the paint on fire.
Numerous runs and unpainted patches are visible after painting.
Painting is done on a wet surface or on one that carries condensation.
How to fix it: paint only dry surfaces. Follow the instructions and do not try to paint at ambient temperatures below +10 °C: a warm part taken out into the cold starts to collect condensation.
