It's been 20 years since I've done any sandblasting, but I don't think the technology has changed that much. If you're not set up for sandblasting expect to pay for some equipment including, besides sandblasting equipment, a nice table saw, planer, and a clamping table. You'll have to have a separate room for nothing but sandblasting, I imagine, and make sure you know the proper method for clamping and gluing. Clear redwood is what we used most, then cedar, though probably any wood can be used for sandblasting. We did a sign in Cypress once. It was like sandblasting rubber.
Hope this helps.