Bake each coat at 120° to 150° for 3 to 4 hours. Sandpaper each coat lightly except the last coat.
For gloss finish, leave last coat as it is; for eggshell finish, rub the last coat.
Finishing copal is rarely used over whites because of colour.
Transparent Colour Varnishes.
These varnishes are used over smooth, clean, bright metal. As the metal shows through the varnish, no primer or filler can be used.
One coat only is applied, usually by brushing or by a coating machine; however, it may be dipped or sprayed.
Bake at 225° for 3 hours.
The more these varnishes are reduced, the lighter the colour becomes.
