Using a damp rag, clean the surface of your item. No matter what your item is or where it comes from, it could have dirt, dust, or even leftover sawdust on it. A good place to start is by cleaning all of this off.
Using a medium grade sand paper, sand the surface. Gently sand the surface of you object using a medium grade sand paper such as 200 or 220. You should always sand in the direction of the grain. For some objects this could mean sanding in several different directions according to the grain of each individual piece.
Then sand the surface using fine sand paper. For a very smooth and ready-to-paint surface, use a finer sand paper like 300 or 400, and sand in the direction of the grain.
Wipe clean. Once again use a damp rag to wipe the surface clean of any debris left behind from sanding.
Seal or prime the wood. There are a variety of sealers and primers out there. You will need to choose one (sealers are usually clear or transparent with a slight color, primers are usually white or grey). This will protect the wood from damage as well as help your paint to adhere to the surface. It also keeps the wood from absorbing your paints. This is particularly important when dealing with softwood.


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