When you're trying to 3D print a functional object, how do you know what material is going to best fit your needs? That's not an insignificant question, particularly if the item you're printing is going to be responsible for any weight-bearing functions. How do you know if your filament will be strong enough? That's a question that MatterHackers gets asked frequently, so they decided to do some testing, 3D printing carabiners from several different materials and testing them with a pulley system. The results were somewhat surprising. Read more at 3DPrint.com: https://3dprint.com/159488/matterhac...filament-test/