My name is Steven Helminen and I am pursuing a B.S. in mechanical engineering at Michigan Technological University. I built a RepRap 3D printer for a technical elective course. I have an interest in the capabilities of 3D printing and additive manufacturing. Through this project and Appropedia, I am learning a lot about the open source community and the power it has. I hope to continue to be an active member on Appropedia.

Printer Build[edit | edit source]

Build printer.jpg

The RepRap printer took approximately 20 cummulative hours to build. After the printer was complete it needed to be calibrated.

Printer finished.jpg

Once the printer was complete and calibrated I was able to use softwares such as: cura, Repetier-Host and OpenScad to start developing my own designs to be printed. The project sections are some of the personal designs that I have designed and printed using my printer.

Projects[edit | edit source]

I designed a rock wall hold and the .stl and .scad files can be found at thingiverse (

Rockwallmount sjh.jpg

I had a broken shin guard that I wanted to repair. I designed and printed a replacement guard. I believe there is great potential for customized protective equipment that could be captured by the 3D printing technology. Some companies like Nike and Bauer Hockey are starting to use the technology for some of thier new products. (

Soccer shin guard.jpg

I was also assigned a project to design an appropriate technology targeting a developing country. I designed and printed shoes. (

Completed shoe.jpeg

Discussion[View | Edit]

Welcome![edit source]


Hi Sjhelmin,

Welcome to the Appropedia wiki. Please make yourself at home! If you need a general wiki-tutorial, see the main help page (or the more in-depth one on WikiEducator).

Check your preferences and be sure you verify your email address and turn on email notification if you'd like it -- you can find out when your talk page, or any page on your watchlist, is modified. You may want to upload a photo or information about yourself to your userpage (which is at User:Sjhelmin).

If you have a particular interest or project in mind, go ahead and start it! If you have questions or suggestions, the best place to leave them is at our community discussion page, which we call the Village pump - you should get a fast response. Or, feel free to leave me a note on my talk page if you have further questions, need help finding your way around, have a cool idea for a project, or just want to chat.

Glad to have you here!


Your 2021 impact stats are right here![edit source]


Hi Steven! Check this out:

Your page 3D printed shoes has recieved 1429 page views so far, congratz!! Edit the page to keep it up to date!

Also, your user page has received 168 visits! People are interested in knowing more about you, edit your user page to tell the world what you've been up to.

Thanks for your contributions and for making Appropedia great, have a merry green Christmas!!

The Appropedia Team

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