Posted on Monday, Nov 11th, 2013

Come explore the world of 3D printers as Arch Reactor hosts Meet-Up.Com's monthly Saint Louis 3D Printer Meetup. 

Learn the different tools, software and hacks being used to generate various textures and results. 

Last month had over 40 people in attendance from the entire Saint Louis Bi-State area.

Posted on Monday, Nov 11th, 2013

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 to .  Questions can also be sent to that address. There is no cost for the class.

Nov. 17th        Intro, flahing LEDS, serial communication
Nov. 24th        LCDs, third patry ICs, I2c and SPI protocols
Dec. 1st        Multiple Voltages, Wireless communication, Controlling

AC, DC motors
Dec. 8th         Free day for catch up or topic of participant's interest

Posted on Thursday, Sep 12th, 2013

Day of Hacking Sunday

Posted on Thursday, Aug 1st, 2013

Ryan's Instructable for a DIY PCB Toner Deposition Method has been selected as a featured Instructable!  It was also featured on Hackaday. Congrats Ryan!

Posted on Sunday, Jul 7th, 2013

KC Maker Faire was a big success!  We had 2 days of fun met many exciting new people.  Learned about new ideas and technologies and had a great time doing it.

The following are photos from the event.  If you are an AR member and have photos to post please

send them to and I'll get them posted.



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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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