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.
Step 7: Finish up with oil-based varnish. Brush on the varnish and tip it off with the same techniques you used for the sanding sealer (Photo 8). If you're working in a clean room and did a good job of sanding the sealer, one coat will be plenty.