Using these unfinished wood BBQ grill shape crafts is easy. First, peel off the protective paper backing that comes on most of the crafts. This paper is there to keep the wood safe during laser cutting and shipping. You can then start your DIY project right away. If you need a hole in the shape, tell us the size and location, and we'll add it for free. These crafts are available in sizes from 3' to 36' and are made of cabinet - grade Baltic birch plywood in thicknesses of 1/8 (3mm), 1/4 (6mm), or 1/2 (12mm). If you need a different thickness, just send us a message. As for maintenance, keep the wood away from excessive moisture to prevent warping. You can also sand it further if you want a smoother finish. Our products are hand - made in the Pittsburgh suburbs, so you know you're getting a quality item. If you have any questions during the process, don't hesitate to click the 'Message Seller' button and we'll assist you.