Why is it important to ensure layers are tapered correctly?

Ensuring that layers are tapered correctly is crucial primarily to prevent visible lines after painting. Tapering involves gradually blending the edges of the painted area into the surrounding surface or existing paint. When layers are not tapered effectively, it can lead to noticeable lines or demarcations once the paint has dried and cured, which can be aesthetically unpleasing and suggest poor workmanship.

Proper tapering allows for a smooth transition between different color layers or between the paint and the substrate, resulting in a more professional finish. It helps in achieving an even appearance by ensuring that no abrupt changes in thickness or texture are visible. This technique is especially important when blending colors or when applying clear coats over a colored base, as it facilitates a seamless look across the entire surface.