An advertisement in [https://books.google.com/books?id=ONoDAAAAMBAJ&source=gbs_all_issues_r&cad=1 Popular Mechanics Sept 1923] depicts a crate joint in which each structural member overlaps the other two, and which uses bolts to secure them to each other as opposed to nails which are more typical in the application.
Modular toys like [https://en.wikipedia.org/wiki/Lego Lego], [https://en.wikipedia.org/wiki/Construx Construx], [https://en.wikipedia.org/wiki/Capsela Capcella], [https://en.wikipedia.org/wiki/Erector_Set Erector], [https://en.wikipedia.org/wiki/Lincoln_Logs Lincoln Logs], [https://en.wikipedia.org/wiki/Tinkertoy Tinker Toys], [https://en.wikipedia.org/wiki/Magnetix Magnetix] and [https://en.wikipedia.org/wiki/Geomag Geomag], [https://en.wikipedia.org/wiki/K%27Nex K'nex], and the [https://www.thecooltool.com/en/products/playmat/ Playmat 4 in 1 tool set] inspire generations of inventive youth.
[https://en.wikipedia.org/wiki/Ken_Isaacs Ken Isaacs] designs the Matrix building system and from 1956 - 58 uses it to teach students at [https://en.wikipedia.org/wiki/Cranbrook_Educational_Community Cranbrook Academy for the Arts]. He writes [https://issuu.com/golfstromen/docs/ken-isaacs-1974 How to Build Your Own Living Structures] in 1974.
[https://arl.human.cornell.edu/linked%20docs/Alexander_A_Pattern_Language.pdf A Pattern Language] and [http://library.uniteddiversity.coop/Ecological_Building/The_Timeless_Way_of_Building_Complete.pdf The Timeless Way of Building] are published in 1977 and influence modular design in electronics, computers, and software development, as well as in manufacturing and production.
Erik Hunting wrote an influential 2007 blog post about [http://radio-weblogs.com/0119080/ non-toxic shelter].
Phil and RJ Jergenson and Joy Livingwell compile 30 years of innovation around Ken's framing system into [https://www.ocf.berkeley.edu/~mwilliams/reading/construction/How-to-Build-With-Grid-Beam.pdf How to Build With Gridbeam] published in 2008.
Early open source 3D printers are prototyped using 1 inch square steel perforated tubing as part of the [https://web.archive.org/web/20170718172001/http://builders.reprap.org/2009/08/wrench-built-machine-update.html wrench-built machine], [https://reprap.org/wiki/Eiffel RepRap Eiffel], and [https://www.flickr.com/photos/hoeken/sets/72157614310876998/ RepRap Pythagoras]. Zach Hoeken writes [http://blog.reprap.org/2009/02/pull-yourself-together-bot.html Pull Yourself Together Bot!“]. The [https://reprap.org/wiki/RepRap_Building_System RepRap Building System] is conceived.
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<gallery> 62441445 1382044878631759 5852998538396434432 n 1382044875298426.jpg| 62542698 1382044871965093 4480212525421428736 n 1382044868631760.jpg| Fireballcnc.jpg|Fireball CNC prototype used to print first Darwin and Mendel parts Early RepRap.jpg|RepRap Mendel </gallery>
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Griddome is exhibited at Detroit Maker Faire 2012 and San Francisco Maker Faire 2013. <gallery> Griddome supplies.jpg|Griddome supplies Jig.jpg|Griddome Jig Dome joint v1.jpg|Dome joint v1 Griddome.jpg|Griddome </gallery>
* [https://www.thingiverse.com/thing:5453 SCAD Gridbeam Library] * Chris Palmer writes [https://github.com/nophead/NopSCADlib NopSCADlib] * Launch of the Replimat wiki * Replimat LLC purchases an Avid_CNC_60120_Pro and opens a [https://www.replimat.org/store/ store]