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Arch Reactor Blog


As the STL's First HackerSpace / MakerSpace, We want to invite our neighbors, area businesses, community memebers, and their family's to come visit our space and see what's possible.


We'll have Fairy Floss (Cotten Candy) First introduced in St. louis at the 1904 Worlds Fair.  Hotdogs to Roast and tea to Drink, which were also 1904 introductions.  Yard Games to Play, Tours of our space, and of Course Liquid Nitrogen ice Cream. 

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Iris, Diamonds, and Butterfly Cardweaving samples
Cardweaving Pattern Choices

Please Join us at Arch Reactor by 7pm on Tuesday, July 12 to learn about the ancient art of Cardweaving and create your own narrow band suitable for a bookmark or friendship bracelet.    Choose from one of three patterns, in order of difficulty::   Iris Flowers (fairly easy), Diamonds (average complexity), or Butterflies (a lttle tricky and time-consuming to set up, but fairly easy to weave)?    Arrive early to choose your colors from the available selection!     

This is a hands-on workshop and young children will Need help from their grown-up.   First-come/first-served, max class size of 12, please.

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On Saturday, June 18, Arch Reactor participated in the Red Bull Soapbox Derby in Des Moines, Iowa!    

We're still waiting for the official videos to be posted somewhere, and we didn't win an award, but We Made The News!

Congratulations to the Entire Team for a Great Entry!!!   We're entering again next year, right?!?!


AR's Soapbox Derby Entry mid-course
Flying Down the Course!

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Hey Folks,

We had a Crazy month at AR in April, and to top it off we were accepted as an entrant into the RedBull Soapbox Derby in Iowa

You will find pictures of many of the things and events we have attend in the last month here :
Check them out and see what you missed :)

And if you would like to visit, we have alot of Open to the public events.. This Month we are holding

Open Build Nights : Sunday's - May 15 / 22 / 29

  • These are Nights when we have someone at the space from 7-10pm to give tours or talk about AR. They are also a general open time when members come in to work on projects and/or collaborate.

Tue 05/10 : 7pm - 9pm <Open to Public>

  • Diane will be in house ready to talk about and teach folks about the AR lasers and how they work, along with some tips and tricks to get the best use out of them.

Fri 05/13 : 7pm - 9pm <Open to Public>

  • Derek is Hosting a CNC meetup event, where everyone works together and learns together. No-one is an expert, and Failures are a learning process, but we ahve a good time and walk out better at it than went we came in the door. this month we are focusing on 3d Relief carving.

Sat 05/14 : 1pm - 3pm <Open to Public>

  • Josh and Craig host a Local ROBOMO meetup. ROBOMO is a club for people of all ages and experience levels who are interested in amateur robotics, electronics, and even a bit of amateur radio.

Tue 05/17 : 7pm - 9pm <Open to Public>

  • Craig is Hosting a space Improvement night. On the docket is moving a few Camera locations and possibly some Concrete work (Weather Permitting) . We invite anyone that wants to come out and get some hands on learning, All skill levels are welcome, and for members this would count towards your Volunteer hours.

Wed 05/18 : 6pm <MUST be pre-registered>

  • Kim Stahl is Hosting an Intro to Blacksmithing Class. Please see the Blacksmithing channel in our Discord for additional information and questions.

Tue 05/24 : 7pm - 9pm <Open to Public>

  • Derek is hosting a session in how to re-saw logs for use on the Lathe as Blanks and as dimensional lumber. Possible options for "fast" drying the wood as well as other uses for the lumber.

Friday 05/27 : 7pm - 9pm <Open to Public>

  • Member Hosted 3d Printing Meet-up. Whether you're interested in printing for art, prototyping, manufacturing, or just fixing dishwasher soap lids, this is a meetup group where you can come get answers to your questions, help people new to the hobby, and show off your printer and its creations. If you have a printer, bring it along, working or not, we would love to see and learn about it

Saturday 05/28 : 12pm - 11:30pm <registered but free event>

  • Our monthly Boardgame day starting at Noon and running until at least Midnight. More info here coming soon.

Tue 05/31 : 7pm - 9pm <Open to Public>

  • Intro To... Metal Casting --- We will have the the Foundry out and be Melting down a bunch of scrap into a more Storable shape for Future use. we will cover the basics of the process as well

Come Check us out. Full Calendar here :

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Show and Tell

What have you Made?   What are you currently working on?    Please Show Us!    Whether finished or not, 'perfect' or not, we want to see.

Bring your projects at 7pm on Tuesday, March 22, and help celebrate the Incredible Creativity that is Arch Reactor!

Bonus:  We expect to have a member from the Astronomical Society of Eastern Missouri (ASEM) on site to guage interest in a series of "Build Your Own Telescope" classes



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Pysanky Workshops are well underway and the new students are crafting Spectacularly Beautiful Eggs!    Check out the Photo Gallery here:

There's still time to get in on the fun!   Pysanky Workshops are on our Calendar.   Please reserve your slot on the Registration Spreadsheet, here:

We hope to see you soon!

Joe's Circuit Board Egg
Joe's Circuit Board Egg
Judy's Butterfly Egg
Judy's Butterfly Egg


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A beginner's egg decorated with many flowers in a vase or pot

Pysanky are Ukrainian Style Decorated Eggs.   Worked on whole, raw chicken eggs using wax-resist batik methods with vibrant dyes, they are unique and beautiful.

Please join us at Arch Reactor at one (or more) of our Eight Workshops in March to learn this beautiful craft.

Please see the AR Calendar for dates/times and reserve your space here:

Please contact Diane at  if you have problems reserving your space or have additional questions.

More information about Pysanky at AR including a PDF with instructions and galleries of eggs can be found at


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Every year in January Arch Reactor holds elections for positions on the Board of Officers and Directors.

To reach the entire Board  send mail to

The newly elected Board is:


PresidentDiane S.
Vice PresidentAnn J.
TreasurerDerek S.
SecretaryMorgan M.
Sergeant at ArmsCraig W.


Public RelationsFrank K
WebmasterRobert W.


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As a reminder Arch Reactor is entirely kept running by volunteers, which if you remember at the time you joined is mandatory for everyone to serve at least 2 hours per month.

But if you want to be a total bada&&, considered to be a super macho beefcake/beefcakess with brains and brawn,

serving on the board is one way to help keep our community and space going strong (...and that pretty much will cover your volunteer time and then some).

If you are willing to serve please feel free to nominate yourself on this form, or if you know someone that would be a good fit, please nominate them.

We currently need nominations for the President, Secretary, and Director of Education.

The current members filling these roles are precluded from running due to our new term limit rules.

the above form will allow you to submit nominations, as well as seeing who is currently nominated. Google Docs Virtual Whiteboard of Democracy 2021

Please use this form to submit nominations for the Board of Directors. Nominations will be accepted through January 18th.

Below is a description of the duties of each position as it is listed in our Bylaws and Standing Rules.

At the bottom of the page, you can submit the name of your nominee and what position you are nominating them for.

ALSO, THERE IS A DEBATE TONIGHT!!! (and welding curtain mounting got pushed back a day) 

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