I have been printing images on wood, some with acrylic or enamel paint. Do I need to do anything like heat setting the ink when it dries?

If you are using acrylic and/or enamel paints I would think not. Heating could cause the wood to show discoloring or exaggerate any latent staining. It’s not going to be washed or laundered so the only thing you might want to think about is a clear coating to protect and seal the print. That might help it with durability and adhesion.

Or you might try a regular air dry poster ink which is made for paper. Good poster papers are made from wood pulp. Some will contain rag fibers or cotton. Poster inks normally do well on wood. But I think ultimately you do not need to heat set a print on wood if the ink does not require that to cure and stabilize.

I hope that helps out. Anyone else have experience printing on wooden materials?

heating it is not really a good idea. mine was washed off.. i use an ink for fabrics, try the Jacquard Neopaque and Lumiere paints,, all i did was to roll it out..