When it comes to drywall corners, the amount of weight that can be supported before cracking varies depending on a few factors. The thickness of the drywall, the type of adhesive used, and the strength of the framing all play a role in how much weight the corner can support.   In general, a 1/2-inch thick piece of drywall can support up to 10 pounds without cracking, while a 1/4-inch thick piece can only support up to 5 pounds. But, if you use a stronger adhesive or reinforced framing, you may be able to hang more weight, not exceeding 15 pounds, without damaging the drywall.