3D Insider
3dinsider.com
Tech review site covering 3D printers, scanners and accessories alongside drones and other gadgets, with buyer's guides and how-tos.
3D Printing Industry
3dprintingindustry.com
UK-based news site covering the professional 3D printing and additive manufacturing industry, with business news, research and an annual awards program.
3DPrint.com
3dprint.com
Daily news site for the 3D printing industry, covering business, research and professional additive manufacturing.
3DPrintopia
3dprintopia.com
Annual 3D printing festival on the US East Coast, formerly the East Coast RepRap Festival (ERRF), with exhibitors, talks and community meetups. It also hosts MakerChip Mania, a MakerChip trading event.
Airwolf 3D University
airwolf3du.com
Online learning from Airwolf 3D, the California printer maker founded by Erick and Eva Wolf, with courses in additive manufacturing for students, teachers and professionals.
All3DP
all3dp.com
One of the biggest 3D printing websites, with news, buyer's guides, reviews and how-to articles in several languages. Based in Munich, Germany.
Arch Reactor
archreactor.org
Volunteer-run hackerspace in St. Louis, Missouri, where members share tools like 3D printers, laser cutters and wood and metal shops, and host classes and open nights.
CADclass
cadclass.org
Online CAD courses aimed at 3D printing: learn to design functional, printable parts through project-based lessons. It also has a YouTube channel and shares models on MakerWorld.
Creative Commons Licenses
creativecommons.org
The official guide to Creative Commons licenses, the labels on most free 3D models (CC BY, CC BY-NC, CC BY-SA and so on). Worth knowing what each one allows before you sell, remix or share someone's design.
Enabling the Future (e-NABLE)
enablingthefuture.org
Home of e-NABLE, a global volunteer network that 3D prints free prosthetic hands and arms for people who need them, with open-source designs and a way to match volunteers with recipients. e-NABLE started in 2013.
Japan RepRap Festival
japanreprapfestival.com
Annual maker festival in Japan celebrating RepRap and hobby 3D printing, with exhibits from makers and companies. It also helped popularize MakerChips, small printed tokens that makers trade.
MakeGOOD
3d-mobility.org
Project that designs low-cost, 3D printable mobility devices for children with disabilities, like its mobility chair, and shares the files free on MakerWorld so makers can print them for kids who need them.
MakerChip Catalog
makerchip.app
Catalog for MakerChips, small personal 3D printed tokens that makers design, print and trade, especially at events. Browse designs, track your collection and log trades.
Makers Making Change
makersmakingchange.com
Canadian program that connects volunteer makers with people with disabilities to build low-cost assistive devices, and shares open-source designs anyone can print. Run by the Neil Squire Society.
Precious Plastic
preciousplastic.com
Open-source project that gives away plans for plastic recycling machines (shredders, extruders, injection and sheet presses) and connects a worldwide network of recycling workspaces. Started by Dave Hakkens in 2013.
Print Farm Academy
printfarmacademy.com
Paid course on starting and running a 3D printing business and print farm, from choosing products to selling and scaling. Created by Travis Lathrop, who documents his own print farm on YouTube.
PrintaGuide
printaguide.com
Knowledge base for 3D printing, with beginner guides and articles on materials, brands and techniques.
RepRap Wiki
reprap.org
Home of the RepRap project, started by Adrian Bowyer at the University of Bath in 2005 to build 3D printers that could print their own parts. The wiki documents the printers, electronics and firmware that launched hobby…
Robot Smashing League
robotsmashingleague.com
Combat robot league that runs live events where small robots, many with 3D printed parts, battle in an arena. Fights are posted on its YouTube channel, and it has a merch shop.
Rocky Mountain RepRap Festival
rockymountainreprapfestival.com
Annual 3D printing festival in Colorado where makers, YouTubers and companies show off printers, projects and new products; one of the biggest hobby 3D printing gatherings in the US. Part of the RepRap festival family a…
TechOWL
techowlpa.org
Pennsylvania's assistive technology program, based at Temple University's Institute on Disabilities. Its 3D printing program designs and prints custom assistive devices, and it opened a community space with accessible e…
The Maker Sphere
themakersphere.com
Blog with 3D printing guides, upgrade roundups and reviews, plus the author's own designs on MakerWorld and Printables.
TOM Global
tomglobal.org
Tikkun Olam Makers (TOM), a global movement that brings makers, engineers and people with disabilities together, often in makeathons, to build affordable assistive solutions and share them openly. It began in Israel and…