Using these unfinished wood crossed axes shapes is a breeze. First, peel off the protective paper backing. This was there to keep the wood safe during cutting and shipping. Now you can start your DIY project. You can paint the axes, add decorations, or use them as they are in your medieval - themed display. When it comes to sizing, we have them from 3 inches up to 36 inches, so pick the one that fits your project best. We cut them from 1/8 (3mm), 1/4 (6mm), or 1/2 (12mm) inch cabinet - grade Baltic birch plywood. If you need a different thickness, just let us know. If you want a hole in the shape, tell us the size and where you want it, and we'll add it for free. As for maintenance, keep the wood in a dry place. If it gets dirty, you can gently wipe it with a dry cloth. Have fun with your DIY projects!