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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Pysanky Decorating!
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Pysanky! Please join Arch Reactor on: Sunday, April 7 Tuesday, April 9 Saturday, April 13 <– added! Sunday, April 14 Tuesday, April 16 Starting around 6:30pm on Sundays and Tuesdays. Starting at 10am on Saturday the 13th Plan on at least 3 hours (can work across multiple visits) Beginners welcome All supplies supplied (donations to…
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2019 Election Results
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Please welcome the newly elected board! President Derek S.Vice President Chris W.Treasurer Fred R.Secretary Kim S.Sergeant at Arms Travis K Public Relations Morgan M.Education Ed H.Webmaster Travis M.
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Super Bowl of Destruction!
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Super Bowl of DestructionEveryone 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 in football? Don’t worry, we also throw this party as something for the non-football enthusiasts. As a hackerspace, we use this…
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9th Annual Fire & Ice Fundraiser
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In conjunction with the Gateway Burners, we are pleased to announce the date and time and new and interesting location for our annual Fire & Ice Fundraiser! Join us at NexCore on February 16th from 6PM-2AM! Fire and Ice Flier 2019
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Malted metal update!
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Join us for our basic metal working workshops. There will be instruction and collaboration for new people. Bring your metal projects and beverages to drink afterwards. This will be a free form event the second Friday of every month.BECAUSE OF PROXIMITY TO THE HOLIDAYS, THE DECEMBER MEETING IS CANCELLED!!!Exciting News!!! Starting in January we are…
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Show Me Showoff Coming Soon 11/10/2018
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It is time once again to host the Show Me Showoff. This is a show and tell event at our space that our friends and families can attend. This event is set for November 10th at 6pm till whenever but the food will be set out until 10pm. This is an all ages welcome event.…
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Wand Making!
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It’s the 20th anniversary of the Harry Potter universe and to celebrate Arch Reactor is hosting a series of Wand Making Parties in August! Arch Reactor is making wands for an upcoming fundraising event and is Sharing the Fun! Stop by AR on August 12, 14, 19, 21, and 25 (see calendar…
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Busy Sunday Night
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It was a busy night at Arch Reactor Sunday. Some members were programming in java and laser etching in the clean lab. Mean while in the dirty shop. One member was forging a bearded hatchet, another was overhauling our south bend lathe, and a final member was using the Bridgeport to build parts for his…
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KC Maker Faire
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Hey! We are in Kansas City today. We have lock picking, pysanky eggs, robots, terrarium, slime, and weaving. I will post links to the projects here when they are finished. For Pysanky Eggs: http://www.archreactor.org/project/pysanky-eggs For RC Sumo http://www.archreactor.org/project/rc-sumo-bots
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