January 29th, 2017, 04:07 PM
Join Date: Sep 2013
Originally Posted by Duce
Not sure if I'd trust that chart. Only has up to three coats. All the stocks I've worked with using PTO or BLO have many more coats than that. Once cured, water rolls right off them. Granted, I haven't taken them into any SE Asia jungles, but PTO/BLO does offer more than "zero" protection.
You're thinking liquid water - the test is of humidity moving into and out of wood. Have any doors or drawers that are painted and stick in the summer but not in the winter? That's the moisture content of the wood changing, which causes swelling and shrinkage.
If a finish has zero protection after three coats adding more won't make much of a difference. As it said - the second coat doubles the amount of finish. The third only adds 1/3rd, the fourth 1/4 and so on.
And remember - Springfield only put one coat on Garand stocks before they left the factory.