Ever noticed that a rubber band gets warmer when it’s stretched? The bands also get cooler when allowed to snap back to relaxed length? [Ben Krasnow] noticed, and he built a rubber band cooled ...

This Mass Effect M-6 Carnifex Rubber Band Gun is the exception, though, and it’s all thanks to the detailed efforts of [eggfooyoung]. Like many others in childhood, [eggfooyoung] dreamed of ...