#video of #self-replicating Langton Loops running out of space
on 02024-05-26#self-replicating #Maslow #2d-cutting #CNC with a gallery of open furniture designs
on 02023-12-27Gregory Chirikjian's Google Scholar page, also mostly on #self-replicating systems
on 02023-01-04Matthew S. Moses's Google Scholar page on #self-replicating systems, mostly
on 02023-01-04Lawrence Kesteloot’s short #fiction story "Coding Machines" about #self-replicating software
on 02022-10-02Stephen Hawes’s The Index Pick and Place Can Build Itself, #self-replicating #hardware using “Open Pick and Place” (?) and doublestick tape #video
on 02021-12-08"Dollo", another #self-replicating #RepRap, with a building-blocks frame. #3D-printing
on 02021-12-08"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
on 02021-12-08"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
on 02021-12-08Lukas Süss’s (#mechadense) motivations for #self-replicating #hardware
on 02021-11-10Twitter thread on #self-replicating “1km crawlers” with a “chondrite to 3D printer pipeline”
on 02021-11-04#self-replicating #nanotech with "gem-gum-tec" by #mechadense.
on 02021-11-04notes on #self-replicating
on 02021-11-04the #seed-factories #self-replicating project is rooted at this userpage
on 02021-01-20"Seed Factories" WikiBook about #self-replicating factories: “a starter set of equipment intentionally designed to improve by a recursive process.”
on 02021-01-20The 1995 Lackner-Wendt “auxon” #paper on #self-replicating robots, “Exponential growth of large self-reproducing machine systems”. Particularly interesting: “Carbon plays a special role because it becomes gaseous when oxidized and, as a result, its reducing power increases steadily with temperature. It is moderate at low temperatures but at 2200°C carbon reduces all the other common elements.” If I understand the diagram correctly, the last one it crosses is CaO, crossing Al₂O₃ just a bit below, around 2000°. However, their proposed element separation cycle is a bit more complex than that would suggest. Does this really imply that you can smelt aluminum by heating alumina above 2200° inside charred bread? There are two footnotes about industrially-feasible carbothermic aluminum reduction, but unfortunately they’re in a 1988 conference proceedings. Fortunately, there is more recent research. #materials
on 02017-01-24A popular presentation of the Lackner-Wendt proposal for the “auxon” #self-replicating machine; Klaus Lackner and Christopher Wendt, article by Thomas Bass, October 01, 1995.
on 02017-01-24A surprisingly good #introduction to #self-replicating machinery.
on 02016-05-26The Freitas and Merkle #ebook “Kinematic Self-Replicating Machines” ("KSRM"), their 2004 review of the state of #self-replicating possibilities.
on 02016-05-26“A Self-Reproducing Interstellar Probe”, Freitas’s 1980 proposal for a #self-replicating thing. Its generation time is 10³ years, about 50 human generations, which makes it seem likely that more advanced replicators would out-reproduce it quickly; but then, my generation time is 260 000× that of E. coli, and yet my species accounts for more biomass than E. coli does.
on 02016-05-26the 1980 conference proceedings in which Freitas described how to make #self-replicating lunar robots.
on 02016-05-26I didn’t realize that that self-reproducing loop thing in xscreensaver was actually a member of a famous family of universal von-Neumann #self-replicating #cellular-automata, discovered by E.F. Codd, the guy who invented relational databases a few years later.
on 02016-05-26Reflections on the philosophy of #self-replicating and self-reproducing systems, with a focus on Dawkins and James Griesemer. #toread
on 02016-04-29thoughts on #RepRap, from someone who’s basically given up on #self-replicating.
on 02016-04-27The #Snappy #RepRap #3D printer can “self-replicate” itself in 100–130 hours and two kilos of plastic, according to one of the comments here. #self-replicating
on 02016-01-11