dependent for existence, occurrence, character, etc., on something not yet certain; conditional (often followed by on or upon): Our plans are contingent on the weather. 2. liable to happen or not; uncertain; possible: They had to plan for contingent expenses.
But they don't do a worse job, either. Sure, expensive bristle brushes allow you to spread the varnish out smoothly, but so does a forty nine cent foam brush. So it makes sense to use the lowest-tech, least expensive tool to do the job.
use in brushes. in brush. The type of material used to make a brush and its design are dictated by the intended use. Hog bristles, for example, have long been used for paintbrushes and art brushes because such animal fibres are flexible and resilient and display an excellent capacity for holding paint.