Make it extreme

Pipe bender v.1

 * https://grabcad.com/library/make-it-extreme-s-bender-roller-1 from makeitextreme.com rollerbender https://www.youtube.com/watch?v=FbqaH1kDztk
 * https://grabcad.com/library/metal-bender-drawings-1 from makeitextreme.com

Pipe bender v.2

 * https://www.youtube.com/watch?v=EaIqlG1vHs8 Pipe bender and plans at https://www.patreon.com/makeitextreme/posts?tag=plan

links
see Lathe from Homemade lathe machine uploader.

links
Machine design