Sure thing. Grab a thin aluminum hinge strip or a 1‑inch wide steel bar, cut it to the same length as your fold line. Pinch it at the fold point with a pair of needle‑nose pliers, then wrap a strip of nylon or even a thick rubber band around the joint for a bit of flex‑tension. If you’re in a pinch, a piece of old bike rim tape taped around the hinge will keep it from wobbling. For extra durability, coat the metal with a quick spray of clear nail polish or a dash of epoxy before the first use—just enough to stiffen it up without adding bulk. Now you’ve got a lightweight, tight, and surprisingly sturdy hinge that’ll keep folding and flying.