Quote:
Originally Posted by iim7V7IM7
“Drying” refers to the evaporation of the solvent which results in a solid film. Nitrocellulose Lacquer is a common finish that changes to a solid through a “drying” process. “Curing” refers to a chemical reaction that occurs in the finish to bring about the change from liquid to solid. Oil Varnish is a common finish that changes to a solid through a “curing” process...  |
The distinction between "drying" and "curing" is an interesting one. Both lacquer and varnish "dry" as well as "cure". As you point out, the processes are different for each. Lacquer "drys" through the evaporation of solvents, and will continue to "cure" over at least the next month as the finish continues to "off-gas" the remnants of the solvent. Oil Varnish dries through a chemical reaction -- precipitated by UV. Nick has a UV box into which he places the guitar for 12 hours to dry between coats. Although dry to the touch, the varnish will continue to cure for several months. In both cases the finish hardens as it continues to cure.