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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Tuesday, March 13th, is Arch Reactor’s Bacon and Rum potluck
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If you didn’t get enough excitement at the Open House 3.0 or didn’t get a chance to come, swing by our potluck Tuesday for the Bacon and Rum extravaganza! Our doors are open at 7:00pm, and we’ll be having fun for a few hours at least.
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Open House 3.0 on March 10th
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This coming Saturday, Marth 10th, is Arch Reactor’s third open house. Admission is free and all are welcome! If you’ve been waiting to check us out, this weekend is a great time–we’ll have lots of projects on display and great member turnout. What Open House 3.0 Where Arch Reactor Hackerspace2400 South Jefferson AvenueSt. Louis, MO…
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Free to the Public Arduino Class
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Free Arduino Class Ardunino for Artists! 4 Sunday nights 7 to 9:30ish starting Jan 29th at Arch Reactor. 2400 South Jefferson, Saint Louis, MO. No microcontroller, programming or electronics experience needed. If you have an Arduino (or some clone) bring it, otherwise come and learn which would be best for you. Free, but please RSVP…
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2012 Fire and Ice Benefit
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The Gateway Burners and Arch Reactor are teaming up for the second year in a row to present ‘Fire and Ice’. This fundraising event will take place on January 21, 2012 at the William A. Kerr Foundation Building at 21 O’Fallon Street, Saint Louis, MO 63102. The event runs from 7:00 pm until Midnight and…
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RepRap Mendel build
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Bob built this 3D printer in the space. The plastic parts were all printed using the Makerbot. The sections of hte video with tons of people are the regular Tuesday meetings. youtube://v/CLdWMNxkPzQ
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Thanks for coming out for the Geek Garage Sale
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We had a great time talking and showing people around at the Garage Sale. We didn’t mind the new funds pushing us a bit closer to our 501c3 fee. Hope to see some of you guys back soon.
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Exploring the Tech DIY of ‘Hackerspaces’ on Science Friday
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This afternoon the topic on Science Friday on NPR was “Exploring the Tech DIY of ‘Hackerspaces’“, featuring members of Alpha One Labs and NYC Resistor. Some Arch Reactor members tried to call in, but I have not heard if any actually got on the air. Listen to a recording of the show here
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Building and Maintaining a Project Community with Github
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Arch Reactor is pleased to host a presentation this saturday. The event is open to the public, and the invite has already gone out to many computer related user groups in St Louis. full invite after the jump
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Hack Something Night
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Hack Something Night is a regular Tuesday meeting feature where people get together and attack a thing or project and make some progress on it. This week there were several projects being worked on, pictures and summaries below
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