A commitment to creating and knowledge sharing.
Our mission is to provide an uninhibited environment that promotes creativity and learning to any and all potential makers and hackers. We achieve this with our combination of collaborative work space, public classes, and the extensive knowledge base of our members.
The only Constant is Change
Arch Reactor is a constantly evolving organization, the tools-on-hand are ever changing and improving, driven by member initiatives.
Wood working
Power tools, hand tools, and specialty tools allow making just about anything out of wood
Metal working
Metal working capabilities expand and improve almost weekly as member make the tools they need
Textiles
From standard machines to industrial sewing that can handle denim and leather open many possibilities
3D printing
Several filament based 3D printers and resin printers are available, supporting projects up to 500mm3
Laser Engraving
With a 3ftx4ft cutting area our CO2 laser can cut and engrave large projects with ease
And more
Vinyl cutters, soldering, oscilloscopes, lapidary, and more!

Our 5000 ft2 reaction chamber contains a Shop full of equipment, a Lab to work on your projects, a Classroom to enrich your mind, and a Lounge where ideas can fuse together. Our space is a community workshop where members learn, collaborate, and bring ideas to life. Our members keep everything running, and our community is always working to improve the space.
Lab Area
The Lab area features a lot of table space for everyone to work on their projects in a low-dust environment. There are also many tools for working on electronics and other clean projects, including a soldering station, vinyl cutter, 3D printers, and an 80W laser cutter. There are shelves where members can keep a private tote, and an assortment of salvaged and donated parts available for anyone to use.
Classroom
The classroom seats over 20 students in a clean and quiet space conducive to learning. It is not completely finished, but it is functional and we have been using it to hold classes. We currently have two large flat panel displays on the walls for presentations. We expect in the future to add a large projector screen, white boards, a wireless microphone system, and a live streaming camera all available for any class.
Lounge
The lounge will be a cozy area for everyone to relax and socialize in. We currently have a fridge full of soda and a freezer with pizza, and we hope to soon have a full kitchenette. There are couches and comfy chairs, a MAME machine, and soon there will be a console gaming area as well.
Shop
Many of us urbanites don’t have garages to tinker in, which is why we have a fully featured shop in our space, including saws, vices, grinders, lathes, drill presses, planers, welders, kilns, forges and all the tools we need to create. Some tools are owned by the organization, but most are owned by our members and shared. Use of the shop is restricted to members, and you must always be trained before using a new tool.
“A co-op workshop for techies, tinkerers, and free thinkers.”
Evan S. Benn
St. Louis Post-Dispatch
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2016 Fire and Ice!
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Saturday, February 13, 2016 – 6pm – 1AM All Ages until 8PM, after 8PM 21 and Up Nebula Coworking Event Space 3407 S Jefferson Ave 63118 Tickers $12 or 2/$20 – Available at the Door Kids free with Adult Admission Crock-Pot Cookoff Fire/Ice Costume Showcase Expanded Art & Technology Silent Auction Science, Art,…
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2016 Election Results
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Please welcome the newly elected board! President Tony S.Vice President Diane S.Treasurer Derek S.Secretary Joe C.Sergeant at Arms Niels B. Public Relations Morgan M.Education Apollo T.Webmaster Travis M.
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Arch Reactor Hackerspace At Critical Mass & Moving
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Be a part of Arch Reactor’s Move. Help our Hackerspace Double in Size & Increase Our Community Impact Come & help us to grow through our crowdfunding campaign! Learn more about the exciting things the educational non-profit, Arch Reactor is doing in St. Louis, Missouri. http://igg.me/at/archreactorstl/x/11766633 Arch Reactor is Moving Welcome to Arch…
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First Friday Harry Potter
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We had a table at our Science Center’s First Friday Harry Potter themed event. We exceeded Di’s personal fundraising goal by $500!!! The Griffindor scarf had 166 raffle tickets in the bucket. ($1 each/6 for $5/13 for $10) Not too shabby! The wands (craftfully made by several of our members) were a HUGE hit (and…
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Learn Cardweaving at Arch Reactor
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Interested in learning the basics of Cardweaving? Join Diane at Arch Reactor at 6:30pm Sunday, October 4, to review the basics of Cardweaving, learn about patterns, materials, and techniques. See the Arch Reactor calendar for contact information.
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SLSC Maker In Residence
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The Saint Louis Science Center opened a new Makerspace in June and has asked members of Arch Reactor members to contribute as periodic Maker In Residence. Today Frank Kallel and Diane Sudduth showed off Laser Cutting! We restricted ourselves to cardstock so that we could make a lot of things to give away. We made…
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Arch Reactor Recieves a Grant From Boeing’s Employee Community Fund
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Arch Reactor is happy to announce that we have received a grant from the Boeing Employee Community Fund. “One of the largest employee-owned and managed funds of its kind in the world, the Employees Community Fund (ECF) of The Boeing Company has been empowering employees to make greater impact by pooling their tax-deductible donations for…
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Science Center – Bright Ideas Expo
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We recently attended the Bright Ideas Expo at the Saint Louis Science Center. The expo was for highlighting St. Louis makers — their amazing work and the creative process each maker takes along the way. The expo was to provide an inside look at the work of local game developers, visual artists, crafters, tech visionaries…
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KC Maker Faire 2015
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We had a reallly fun time at the Kansas City Maker Faire. I talked with at least 10 people that either live in St. Louis or wanted to send somebody they know to visit us. We had the telepresence robot, The NVidia Jetson robot, the pixy bots, face dectection bot, 3 different LED Matrices, and…
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