To an outsider, this is mind-blowing: since most of the history of life on earth has been the history of micro-organisms, the evidence for horizontal transfer suggests that a mainly Darwinian account of evolution may be only the latest version, applicable to the most recent, much more complex forms of life.
You apply tung oil just like linseed oil or oil/varnish blend, but you have to sand tung oil after every coat, not just after the first, and it takes five to seven coats, allowing two to three days drying time between each, to achieve a smooth, attractive sheen. or several weeks :
Quick Answer. Interior-formula, oil-based primer takes approximately one to four hours of drying time before applying paint. Exterior-formula, oil-based primer requires up to 48 hours of drying time before painting. A latex bonding primer, which is formulated for paneling, tile, glass or metal, needs 48 hours of drying time to cure completely.