Clips·reddit.com↗·1moWhen Mail Was Carried by Train, Carriages Had Equipment That Picked up and Dropped off Mailbags on the Fly Without Needing to Stop#Reddit#reddit.com#interestingSourceRead the original at reddit.com0SaveShare📚Add to CollectionNext postHow to help the Sanzhani in The Blood of DawnwalkerRelated postsUniversity of Waterloo students broke a Rocker world recordreddit.comWorld record for the greatest height by human catapultreddit.comI used only 25 grams (0.9 oz) of copper wire to make this. It's entirely wire wrapped, no soldering.reddit.com