62 For 20 years, a $6 knob that takes one hour to 3D print has been grounding Black Hawk helicopters four times a month, and the contractor responsible won't sell us the part or the IP rights to fix it ourselves. (twitter.com) posted 30 days ago by brain_dead 30 days ago by brain_dead +62 / -0 21 comments share 21 comments share save hide report block hide replies
Many such cases.