Posted on Wednesday, Aug 27th, 2014


  • Fastest Lap - George with a 20 second time
  • First to cross finish line (all racing at once) - George
  • Endurance (Most Laps) - Niels won with 10+ laps and he most likely could have gone further but we stopped it.
Posted on Tuesday, Aug 12th, 2014

Ben Nuttall of the Raspberry Pi Foundation will be visiting Arch Reactor as he continues on his journey from NYC to Salt Lake City!  Ben is visiting various hackerspaces, schools, and other community spaces for his 2014 US Tour.  Bring your Pi projects to show off and learn more about the Raspberry Pi.

Come join us Friday, Aug 15th for a night of Pi and cookies.

Posted on Wednesday, Jul 16th, 2014

Chris has completed our new Shapeoko and run a few test jobs.  On July 29th we will have a Shapeoko Workshop night where we will do training.  That night we will teach you how to use design software like Easel to produce a simple bottle opener.

Posted on Tuesday, Jun 24th, 2014

Photo by: Sarah Darby/Missouri Business Alert

Missouri Business Alert has published a great article discussing the Bright Ideas Expo and Arch Reactor's involvment.

Posted on Friday, Jun 20th, 2014

Instructables and Dremel have selected Arch Reactor as one of its locations to host a build night to learn how to use Dremel tools and create awesome things!

We will be Dremel-ing and writing up our projects for others to learn via doing through the power of sharing knowledge. After a 15 minute safety demonstration, we will have five Dremel rotary tools with accessory kits and three Dremel reciprocating tools to make a mountain of awesome projects! We have a lot of things at Arch Reactor that could serve as the foundation for projects, but we want your ideas, your participation, and your projects to shine here. Bring any materials you may have and transform them into science, art, or something unique.

All are welcome. Check the Arch Reactor Calendar in July for the event datea and start time. There will be a mandatory 15 minute safety demonstration at the start of the build night.
Update: Tuesday, July 15th is the date. Show up as early as 7 pm to get started. If you can't make it until later, show up when you can. We have plenty of Dremel Tools to share.

Come out and build things with Dremel tools and learn how to make your projects a reality fast!  See you there!

Update 6/22/2014: Below is a photo of the package of tools and accessories that have arrived for the Build Night.



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Upcoming Events


  1. 3D Printer Meetup

Sunday, March 25th

  1. Pysanky Eggs
  2. Open Build Something!
    • Start time: 07:00pm
    • End time: 10:00pm
    • Where: 2215 Scott Ave, St. Louis, MO 63103, USA
    • Come stop by and visit! Open build night to work on projects and hang out!

    • View this event in Google Calendar

Tuesday, March 27th

  1. Pysanky Eggs
  2. Shop Training: Basic Wood Lathe

Thursday, March 29th

  1. Laser Workshop Night
    • Start time: 07:00pm
    • End time: 08:00pm
    • Where: 2215 Scott Ave, St. Louis, MO 63103, USA
    • Feel free to come by to learn how to use the laser cutter, talk about laser cutters, work on laser cutter projects, etc!

      Contact Person: Travis

    • View this event in Google Calendar

Saturday, March 31st

  1. International Open Day
    • Start time: 10:00am
    • End time: 09:00pm
    • Where: 2215 Scott Ave, St. Louis, MO 63103, USA, Archreactor, Arch Reactor
    • Arch Reactor, Just like many Hackerspaces World Wide, invite you to come in and see our Space, in celebration of International Open Day.

      Come in and see who and what we are, how you can become part of the Group or just hang out and have some fun in conversation. We will be Open from 10am until at least 9pm that day.

    • View this event in Google Calendar
  2. March BoardGame Night * ArchReactor
    • Start time: 12:00pm
    • End time: 11:30pm
    • Where: 2215 Scott Ave, St. Louis, MO 63103, USA, Archreactor, Arch Reactor
    • Come On Out and Play games With us. If you don't know games that's OK we are friendly and love to teach. If you do, bring your Favorites along and let get a Game in.

      We'll have Food there, and I'll happily take 5$ in exchange for letting you eat all day.

      We start at Noonish and Play until you Leave or after Midnight, whichever comes last. :)

    • View this event in Google Calendar

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Visit Us!

Come check out the space at one of our regular Tuesday meetings or Sunday hack nights, year-round. Tuesday and Sunday events are always open to the public, and generally begin around 7:30 pm.

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About Our Hackerspace

Arch Reactor was founded in 2009 by a group of friends who liked technology, programming, making, and pizza. Now St. Louis' largest hackerspace, Arch Reactor's growing membership continues to bring new skills, projects, equipment, and people to one place.

For a deeper understanding of what we're about, you should check out our explanation of hackerspaces, perhaps read about one of our members' projects, or (best of all) come meet us in person at the next open event!

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