I am proud to announce an open beta of plans for the Adjustable Height Mobile Gantry Crane, aka “The Cranebow.” The design is based on Frank Howarth ‘s gantry crane video, but is by no means a copy. The plans are free, with the caveat that I make absolutely no guarantees on its lifting capacity (assume it is possible that it may collapse under its own weight). Plans can be found at
The crane in action: https://instagram.com/p/BnxWczJlMk-/
Some videos on the construction (more to come): http://bitly.com/cranebow
If you do find it useful, consider sending an e-mail to email@example.com to get updates as they are refined. If you build it, tag me on social media @thegraindoctor (except in case of a disaster, in which case I told you it might not work).