A translucent appearance is caused because the solids have not been properly reconstituted
into the coating before spraying. Thin Film Coatings are low in solids and when
allowed to sit for any period of time the solids will settle to the bottom. Not
mixing well will result in spraying mostly colored solvent and produce a translucent
look. Shake the can for a few more minutes and re-spray the parts.
There are two reasons for flats and satin coatings to come out too shinny or Flat
coatings to not look flat enough. Thin film coatings in general will look different
if sprayed on a cool surface as opposed to spraying on a warmed surface. Thin film
coatings will also look different if sprayed light or heavy.
Thin Film Coatings are generally spayed at the sheen you want as an end result.
When spraying, it should take about 3-4 passes with your spray gun to get to full
color. Check your material flow to be sure you’re not spraying too heavy.
Old towels and newspaper can make a good mat to clean your gun on, however, they don’t absorb fluids like polypropylene-based materials do. Those fluids
can end up staining your floor or your table and sticking back to your gun as a result. Our engineers designed the KG Gun Cleaning Mat to absorb as
much gun cleaning agents as possible. It also has a flat, plain surface that makes cleaning more convenient, as opposed to fabric and paper that can
get wrinkled while in use.
All of the coatings KG produces should come out smooth. Rough finishes are generally caused by too much air pressure, the substrate being too hot,
too little material flow, how far the spray gun is held from the substrate or a combination of these. Adjusting the air pressure, material flow, preheating
and holding the spray gun the same distance from the substrate is critical and when accomplished will yield a smooth finish.
Of all the reasons mentioned above the most common is too much air pressure with the substrate being too hot. This will cause the coating to dry before
it hits the part, creating an almost grit like texture.