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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Hey Makers! Ready for a glimpse into this rabbit hole?…
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The Nation of Makers released their Impact Report 2017-2021 and it has some interesting numbers! Just wanted to share this information with those that might find it interesting the impact Makerspaces have on their communities and resources and kits provided by NOM for moving forward. https://drive.google.com/file/d/13sQIicc9gw0H7GoJfgqzDwlJ20LNmA3D/view
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OPEN TONIGHT + White Elephant Gift Game
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Hey Members, Arch Reactor is open tonight for working hours. Also, If interested in participating in the WHITE ELEPHANT GIFT GAME please bring one wrapped gift item under $20 and add it to the pile. Game will start at 8pm. Cheers!
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Christmas EXTRA OPEN HOURS for part time members
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Members, Every year around this time we like to offer a few more “open” hours to accomodate our part time members, those who don’t have full access, so that they have plenty of opportunity to get in and make some Christmas Gifts, etc. So starting this week, every night should be opened. Thanks, The Board.
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Gobble Gobble ya TuRKEys. POTLUCK this Tuesday @ 7pm
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# See you at 7pm! dONt be that TUrKEy and miss this Think-filled night or whatever…. Come one come all, just bring a dish and let us know in advance what that dish is gonna be…. COPY THIS LINK to dish about your DISH: https://docs.google.com/spreadsheets/d/1LHfxZ85D2CTIsNPGONBBFgMRYX5jdhsZ33xsaCgOzy0/edit#gid=0 MEAT supplied by “Arch Reactor” If you have any family…
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New Member Orientation this Tuesday before Member Business Meeting! 11/2/212
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Hey NEW MEMBERS!!! The first Tuesday of every month Arch Reactor Hosts the monthly members business meeting at 8pm (online via meet.jit.si/AR_Tuesday and in person) With a few new members recently We will be hosting a NEW MEMBER ORIENTATION before the member meeting this Tuesday, NOVEMBER 2nd at 7:30pm. This is done in person –…
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This coming Tuesday~
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Members (New and Old) – If you care about your safety and the safety of others at the space or have nothing to do at all, or just need to get out of the house… THEN COME ON DOWN TUESDAY Night and pitch in some of your time! Every Sunday and Tuesday Evening during our…
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A Message to ALL AR MEMBERS…from the board
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HEY EVERYONE!!! Elections will be coming around again soon, and as this board will change, changes still yet to be made and the next few business meetings are where YOUR VOTES COUNT! This coming Business Meeting we will be announcing possible changes to the election process, to which you will be asked to vote on…
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This Saturday’s WoodShop Training Session
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Held this Saturday, Oct 2nd, from 1-4! Come and get training on using the table saw, wood lathe, jointer, and planer in the woodshop. It’s necessary to have this training in order to use these tools and equipment. Please look for the email message on our Sanctum google group and RSVP with Alex and Ed!…
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First Tuesday of every Month is ALL MEMBERS Welcome BUSINESS Meeting!
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New and Current Members, please note that our meetings are still available online and now also in person as well! The business meeting is a great way for you to ask questions, meet more people, and help shape the work environment around you! This weeks AUG 3rd 2021 meeting for example will discuss some of…
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