Comment Re:plastic is for junk (Score 3, Insightful) 266
Have you ever had a LEGO brick turn squishy on you? Because that's what they're made of, ABS plastic.
It's a plenty tough enough material that I used it to manufacture parts for a geodesic dome for outdoor use as a greenhouse, and it held up fine. I also manufactured gears for a friends high end RC car after the manufacturer had gone out of business. Those gears see a lot of stress, and they held up fine.
ABS is a great material, and so is PLA.