what is the best brush to use when varnishing stairs?
Answers:
It is expensive , but its by purdy and its called Ox-o-angular. This brush is very soft and made for oil and varnish finishes. Leaves less brush marks.
Other answers:
soft bristel
soft bristel
if you are using an oil based varnish a QUALITY china bristle brush or more expensive oxhair brush
just painted my bathroom door and used for the ajm the brush with natural hair bristles and the roller for the dood. It resulted almost the same but i used extra glossy oil paint.