I just built a trivet out of hard maple and wenge. I was going to use tung oil to rub on it. Will it withstand the heat of a pot/pan coming out of the oven or the stove? If not what would you suggest?

When we moved in our brand new house the ceiling in the kitchen and dining room was streaky and unpainted in some areas. The builder came back 3 times and it still looked funny but improved. Now I’m getting ready to paint the walls and I thought I would paint

How can I tell the difference between an old oil-based varnish finish and a water borne finish?