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.
Basic Brush Types. Bristle: Bristle brushes are generally made out of hog's hair. Hog-bristles are stiff and springy; they are especially suited for oil painting brushes as they are durable in use with heavy oil paint, textured canvas and harsh solvents like turpentine. Sable: Sable brushes are for oil paint, they are soft and springy.