3D Printed Piggy Bank - a Journey in Problem Solving

This is a guest post from Bethany Jones, who currently teaches a 7th grade science elective called Engineering Design in Mason, Ohio. Bethany is the mother of two tiny humans and one very energetic dog. She is a tinkerer, lover of learning and recent 3D printing enthusiast.

“If at first you don’t succeed, call it version 1.0”

This has become my motto as I have leapt headfirst into the world of 3D printing with my 7th graders. One thing I have tried to share with my students is that it’s not all about the end product, but the journey you take along the way. There is often more learning that takes place through failing than if you get it right the first time around.  

Ever since our 3D printer arrived a month ago, I have been adamant that it not just be a toy, but an avenue for creation.  I am encouraging my students to try designing something on their own that has a purpose or that solves a problem. In an attempt to show them that I was in this crazy new adventure with them, (as well as wanting to test the print size limits of the printer) I decided to make a piggy bank.

I kid you not, about an hour into the print, a group of students are hovering over the printer watching in awe and one says, “how are you going to get the money out Mrs. Jones?” Face-palm. I had forgotten to put a hole in the bottom to get the money out! 

I told my kids that we’d just have to break it open. It ended up not mattering, as this version printed with a giant mystery hole in the back. But I quickly went back to the computer and edited my model to include a money-retrieval hole in the bottom. Great teachable moment about learning from your mistakes right? 

My students and I had fun analyzing the possible causes for the other print issues and we decided to try and make the walls thicker for more support and hopefully close the mysterious hole.

The second time around, I think something went awry with the printer as everything went well until the very end. The slot on the top printed crooked and the ears  were hanging on by a thread about halfway up. Since I couldn’t find any explanation for this, I printed the same model with no edits and it worked! Third time's the charm!

I am loving the iterative process of designing, printing, redesigning and reprinting until I get something right. It is a wonderful lesson that my students are learning as well. I am finding that in a world where they may have been afraid to fail before, they are energized by the possibility that they can analyze the problem and attempt to fix it! Beyond making something cool to look at, it is something to be proud of when you can create something on your computer screen and make it come to life as a tangible object to enjoy and share with others.

Piggy Bank: http://www.thingiverse.com/thing:1533937

*Addendum: Fast forward one day past writing this post and the poor perfect piggy version 3.0 took a flying leap off my desk and met his demise as a clean break ripped through his body, splitting him in twine. I almost cried real tears in front of my students. But looking on the bright side, as one must do to remain sane, we can now analyze broken piggy from the inside out.

A Girl's Introduction to #3DPrinting (guest post)

This is a guest post from Leila - the daughter of two awesome educators (@iwearthecrowns and @mr_isaacs) who is going into 7th grade. Here's her Bio in her own words: 

Hi my name is Leila(boo215) and I LOVE 3D printing!!! I am so happy that my school has a 3D printer and that the teachers are so nice to me! Also I love that so many kids can connect through maker clubs and 3D printing. I'm an all star cheerleader and did ski club and running with my school this year, and just a little fun fact, I ran two 5K's in two weekends! I am going to run cross country next year for my school!

Hi, my name is Leila and my parents made me go to the VR mini hackathon at the Bergen makerspace a few weeks ago. I didn't want to go for the whole day because it was too early so I went for the afternoon... where I then discovered tinkercad. The mentors all had a really cool name tag that I HAD to learn more about, here is what they looked like(the square on the left).

I wanted to know how they made them and one of the mentors showed me the 3D printers. The students got the key chains(to the right). We had issues for taking my blue one off that I made because the letters were holes and it got stuck on the base, where the 3D prints are printed. 

Once I found Tinkercad which is a 3D design tool, I went right into making my whole family's Twitter handles - you can see how they looked in the pictures here.

I was a part of the AVON39 Youth Crew - a walk to end breast cancer - and because of how excited I was to be able to use the 3D printers, I went right into designing this design on Tinkercad.

I made them overnight at my school but they sadly got messed up, so luckily, the teachers of that classroom were so nice to redo the prints!