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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Learn to make Pysanky in April
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Arch Reactor will be hosting several Pysanky (Ukrainian Egg) workshops in April. Stop by and decorate your own beautiful egg. April 2: 2pm – 9pm April 4 – 7pm – 10pm (with break for the business meeting) April 9 – 2pm – 9pm April 11 – 7pm – 10pm <!–break–> Supplies will also be available…
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Wand Party This Sunday, February 12
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Stop by Arch Reactor on Sunday, February 12, to make “Magic Wands” You may make one or more for yourself or donate your creations to an upcoming Arch Reactor Fundraiser. Please note that this style of wand-making involves hot-glue. Children are welcome but must be Closely Supervised by their parent/guardian.
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Super Bowl of Destruction Winners!
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There was excitement, competition and mass destruction. The football game was also pretty good. Two hours of destruction created a huge amount hackable material. In the end many teams competed but only one could win. Here are the winning entries: 1st Place: James His robot scored well in creativity, functionality,…
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Arch Reactor was featured on Sci Tech Now on PBS
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http://www.ninenet.org/blogs/scitech-now/scitech-now-february-1-2017/
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Pixybot’s v2.3
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I have recently finished a new and improved version of the Pixybots. Presenting Pixybots v2.3. The original program has been fine tuned to be more responsive. The robot also has may other features including a upgraded laser cut chassis, deans power connectors, pan/tilt head, and IR cliff detection in the front. If you have not…
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Super Bowl of Destruction
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Everyone is invited to come to the Arch Reactor for the Super Bowl of Destruction. We will have the football game on our big screen for everyone to watch. Not interested? Don’t worry, we also throw this party as something for the non-football enthusiasts. As a hackerspace,…
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