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.
Brush Styles. Angle sash: Bristles are precisely trimmed at an angle that allows painters to hold the brush more comfortably while painting trim and corners. Brush ends are rounded for a smooth, gradual paint stroke. Trim: Trim brushes have a straight cut-line and are also used for painting trim and corners.