These unfinished wood hanging spider shapes are great for all your craft projects. First, peel off the protective paper backing that comes on most of these crafts. This backing is there to keep the wood safe during laser cutting and shipping. You can use them as is or add a hole if you need one. Just tell us the size and where you want it, and we'll take care of it for free. The spiders come in different diameters from 1 to 36 inches and are made of cabinet - grade Baltic birch plywood in 1/8 (3mm), 1/4 (6mm), or 1/2 (12mm) thicknesses. If you want a different thickness, just send us a message. When it comes to maintenance, keep them in a dry place to prevent warping. If you paint or stain them, make sure the surface is clean. And if you have any questions, don't hesitate to message the seller.