Welcome to the Bunnings Workshop community. Thank you so much for joining us and sharing your question about renovating a pine table.
Traditionally using a paintbrush was the only way to apply varnish to furniture. Furniture oil and wax were wiped onto the furniture with a cloth. Later on, dedicated paint rollers and paint sprayers were used to get an even superior finish. It all depends on how much you are willing to invest into your project and other projects thereafter.