It depends on what effect you are looking for. Dark grain or light? I do mine over a wood color acrylic base then use a contrasing oil paint for the woodgraining using a fan brush to get the desired effect.
On thir DR.1 prop I wanted a darker base and even a darker lamination.
For this old Aurora Guillotine I wanted a lighter base color and a medium contrasting grain.
Hope this helps. Double click on the image to get a good closeup.