How to remove varnish<br>Create good ventilation. Whether your sanding or using a chemical solvent, it's a good idea to have ventilation. Open windows and use fans to create cross-ventilation if you're inside.
Varnish is more easily removed when there is sufficient ventilation. 
( z1 remove :ARG1 ( z2 varnish ) :ARG1-of ( z3 easy :ARG2-of ( z4 have-degree :ARG1 z1 :ARG3 ( z5 more ) ) ) :time ( z6 vent :ARG0-of ( z7 suffice ) ) )