electrolytic rectifiers ("ionic diodes") emitting light. author did his undergrad thesis on it, is disappointed in what else is out there. “Nonetheless it’s very important to properly contemplate & criticise all of these fictional examples, otherwise you end up accidentally convincing yourself that your have created a useful amplifier (like I did at one point with one of my experiments).” #hardware
"Mulbot", open source mostly printed 3D printer “square rail type 3D printed housings for linear bearings. Since the bearings and rails are printed they have been integrated into the frame members. 4.5mm G100 Stainless Steel bearings balls are used to recirculate through the bearing housings to reduce fiction and to provide preload to remove bushing slop. All three of the printers drive systems are 3D printed as well. The Y-axis is driven by a 3D printed herringbone gear rack and pinion. The combination of 3D printed drive and idle pulleys and a TPU belt drive the X-axis hot end carriage. While the Z-axis utilizes 3D printed trapezoidal lead screws and nuts to translate the hotend vertically.” #3d-printing #self-replicating #RepRap
"Snappy 3", “an Open Source RepRap 3D printer designed by RevarBat from July 2014 to January 2018. It is a true RepRap, using very few non-printed parts. This design needs no belts, pulleys, metal rails, and almost no screws other than to mount parts to the motors. This means that you should be able to put one together for about $216, including the price of plastic to print parts. The entire thing snaps together, and you should be able to assemble it from parts in only a couple hours. The few required non-printable parts are available world wide from a variety of suppliers.” #self-replicating #RepRap #3D-printing
"Dollo", another #self-replicating #RepRap, with a building-blocks frame. #3D-printing
Stephen Hawes’s The Index Pick and Place Can Build Itself, #self-replicating #hardware using “Open Pick and Place” (?) and doublestick tape #video