Prepare bare or unfinished wood for paint by sanding it with a sandpiper by strictly following the wood grains direction. You will now need to vacuum the surface of the wood properly with a bristle brush attachment. Once you have finished vacuuming the surface, remove all the sanding debris from the wooden piece.
It is significant to note that it is best to add stain blocking primer to raw and unfinished wooden pieces. This will enable you to prevent the chances of tannin bleeding, which usually occurs when the wood in the oil moves through the paint.
If you are working with painted or formerly stained wooden furniture, then the first and most important thing to do is to clean the surface by using a degreaser. This will remove the oils and dirt from the surface of the wood and bring a shiny appearance to the furniture. After cleaning the surface, you need to prime and sand the surface of the wood, as it will ensure an even and smooth finish.
It is best to use oil-based paint on finished wooden pieces. This is because most of the oil-based paints available in the market will easily adhere to the previously painted surfaces even without a primer. Professional painters and woodworkers highly recommend the use of oil-based paint for heavily used wooden furniture pieces to increase the durability of the material.
However, it is significant to note that oil-based paints take a lot more time to cure and dry when compared to water-based paints. In addition to that, this type of paint is also a little bit more complicated to work with because you will need to use chemical solvents like turpentine or mineral spirits to clean tools, brushes, and the surfaces.