What is this video series about? I'm building a robot arm from scratch! Follow me on my journey as I make a breakthrough, hit a wall, and even check out what parts I'm using! br br About a week ago I posted a short "quick and dirty", un-narrated video of the robotic hand I've been working on. I hooked up fishing line to each of the phalanges and showed how the joints worked as designed.br br In today's video I show some upgrades I made to the metacarpals and joints for better stability, organization, and mobility. I've been working on this about two weeks an it's turned out better than I expected!br br I also walk through some of the reasoning for design changes, things I've noticed, a few challenges, a few printer upgrades (such as adding a glass bed to my 3D printer), and a lot more!br br If you have an questions, comments, or suggestions please leave a comment below!br br Corona Door Openerbr Thingiverse: br The free software I'm using includes:br Autodesk Fusion 360 - Ultimaker Cura - Octoprint - br Some sample parts from Designatronics are in the latest robot build - check out their site at br SUPPORTING CHALLENGEYOURSELF.BLOG br If you'd like to support my work please head over to and become a patron today! br br FOLLOW CHALLENGEYOURSELF.