Made a spark plug case to hold two spark plugs. Holds standard size plugs for a motorcycle or jet ski. I designed it for long thread but of course short thread will fit as well. It uses two #10 x 3/4" bolts for the hinges. I made the hinge too close to the body to get a nut on but the bolts fit tight enough that a nut is not necessary. Doesn't reguire any support to print. I used a 1.0mm nozzle.