You’ve learned how to use your local hackerspaces’ laser cutter and cutting acrylic like crazy but you want to start getting into some wood projects. Well one favorite among the DIY community is using Baltic Birch. It’s a plywood, so it’s strong but also available in real thin increments.
Dan was nice enough to create a post describing some of the details of Baltic Birch. Apparently you can tell the number of ply’s by the thickness, also what kind of grading scale is “CP” ? If you’re trying to buy wood off the internet for your laser cut box you may want to stick to grade “B” because seeing those patches will look ugly when stained. Or you may be OK with a lower grade wood when building a structural piece.
Whatever your reason, you should read the post if you intend to work with this medium.