We have a CET hybrid printer. We went with straight cmyk, no white. No regrets there 'cause we would never use it. (And if that changes we can always add the white ink later since it's field upgradeable). But, having said that, I'm wanting to produce a sign using some old wood. It's for us internally, and we are using some specific pieces of wood with some sentimental value (so we aren't wanting to ditch the wood and go buy new wood with a white face or anything). It's old 'barn wood' style boards. We are mounting them together and then running them through a planer to get a flat print surface. The final product is going indoors. We don't paint much of anything here generally so I know very little about paint. So my question is, what paint would you recommend I use to paint the face of the wood white so that we can then direct print to it?