If you don’t want to take your puzzle apart to enjoy building again later, you can use a special glue while building your puzzle to preserve it. If you don’t want to take your puzzle apart to enjoy building again later, you can use a special glue while building your puzzle to preserve it. The glue you’ll need is a craft glue known as Mod Podge, which provides the necessary adhesive to hold your puzzle together. [amazon box="B003W0XR8M" link_id="20041"] These glues can also provide a glossy or matte coating to your 3D puzzle, depending on the type you buy.