How to make the Electroluminescent paint is actually something very simple, cheap, and not that difficult to apply.
LitCoat formulates how to produce the EL paint and all the steps in how to apply, that being said and as such: EL paint are layers working together and as such there is no “EL paint” itself.
It is all about understanding the mechanics and to act on it by eliminating the hurdles (Edges or ridge)
The secret of electroluminescent paint is systems is to avoid with the first layer (LC1 back-plane) the build-up of a ridge or edge towards the masking tape.
With regular masking tape, paint spray will build up on the edge. This build up will form a ridge when dried. Once the tape is removed, you are left with a rough tape line equal to the tape thickness.
With the folded edge tape, the tape floats slightly off the surface allowing paint spray to disperse along the tape line. This blending results in a smooth feathered edge. This rounded edge helps to disperse the paint during a spray and allows smooth transitional finish. No more hard tape lines with edges.
Feathered edge masking.
A feathered paint edge provides a very low profile that is usually covered with a masking tape. The paint after application appears smooth with no visible ridge from a paint edge.
To create a feathered edge, fold up one tape edge. Spray paint from an angle that does not allow the paint to go directly under the folded edge. This technique is also called soft edging. This is a technique which eliminates the need to sand down the edges of the back-plane and bus-bar, eliminating also contamination of the area. You may have also heard this method being called feathering.