Like an Old West revolver, it has a rotating cylinder with six rounds of ammunition that lets you continue gluing right away even if your glue stick runs out in the middle of a job. A tiny switch ...

Now, let’s compare the strength of your glue with store-bought glue. Use the glue you made to stick together two Popsicle sticks. Place them so that only one inch (2.5 cm) of the sticks overlap each ...