TUTORIAL: How to Spin Cotton Balls on the 3D-Printed Book Charkha @GoodandBasic

Updated September 2026, 2 weeks ago

TUTORIAL: How to Spin Cotton Balls on the 3D-Printed Book Charkha

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$I Finally Built a Mold-Making System That Works (Tested 4 different materials) In which JB revisits and expands on the idea of 3D-printing matchplate patterns for casting by making 3D-printed molds for making durable molds out of 4 different materials: plaster of paris, refractory concrete, unfired local clay, and epoxy-bonded sand. https://www.youtube.com/watch?v=ohPb_3TPjC4 https://www.youtube.com/watch?v=HTQ4BC8Wtn4 The technique seems viable. Im looking forward to expanding on this in future videos. patreon.com/GoodandBasic Website: http://www.goodandbasic.com/ Etsy Shop: https://madebygoodandbasic.etsy.com Podcast: anchor.fm/goodandbasic Twitter: @goodandbasic Instagram: @good_and_basic$

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TUTORIAL: How to Spin Cotton Balls on the 3D-Printed Book Charkha