3D Design and Printing: a New Chess Set

My undergraduate degree is in theater design, so I actually have training in CAD, including a quarter spent learning 3DViz, a professional 3D program that architects used at the time I learned it, which was not that recently. I find it really exciting that I get to pull from that knowledge now in teaching kids 3D printing on the junior version by the same company, Tinkercad. The library system had one small Makerbot Mini that had been given to us by a grant from a local company, specifically for kids programs. Embracing our library's 3D printer was one of the things that helped me get noticed and move rapidly from part time to full time. Traditionally the elementary services librarian at my library has been the one in charge of the 3D printer and having tech classes for kids, so I knew I needed to have something great as one of my first few months of programs in that position. Previously the library had done intro classes that consisted of designing a cup and more complicated ones creating a lamp. The intro classes I ran at my branch were the basics involved in designing a house or castle. With a robust chess club as another of my main regular duties I was inspired to have the kids work together in designing a new chess set.

Rather than just make this a Tinkercad how-to I decided to really teach them about the stages of design. I booked our tech classroom and registered kids, 9 total, with a caregiver, ages 5 to 12. I called everyone two days before, got across-the-board assurances they would come and then ended up with six kids. This is why I hate registration for programs. Anyways, six was a great number. The program was 90 minutes and I broke it up into several phases: Research, Brainstorm, Design, and Re-design.

Research
I started by showing them some images of ancient chess sets, the current standard set (called the Staunton chess set) and the images from Elgin marbles and architecture in London that inspired its designer in the 1800's in London. I talked about how the designer was inspired by his city. Then we took a look at some of the far-out designs for chess sets on Thingiverse.

Brainstorm
We brainstormed different visual themes for our board. Animals, fruits and tv characters made the board. I talked about the steps it takes to design complex pieces and suggested we try something a little more simple since it was most students' first attempts with Tinkercad. Since New Haven is known as Elm City and the town green is in front of the library I suggested trees as a theme. We then brainstormed some more for what each piece could be in our theme finally settling on:
Pawn- leaf
Rook- Tree Stump
Knight- Squirrel
Bishop- Christmas Tree
Queen- Birch Tree
King- Oak Tree

Design
Finally it was time to crack open Tinkercad. I showed them the basics. We divvied up the pieces, see, 6 was perfect! The kids went back to the research phase individually and looked at some pictures to help them come up with their design.Their designs were about as diverse as their age range. My plan had always been to tweak what they came up with to get our end set. 3/4s of the designs needed very few changes, two kids obviously sort of missed the boat on the concept. Many of the kids were incredibly creative, my favorite is the squirrel knight which has a 6 for a tail! Here are their designs:

Re-Design
We talked about how you don't just come up with one idea in design, toss the pieces on the workplane and it's perfect. Instead you come up with the idea and try and try and try until you find the pieces that work together best. I used my nametag as an example (it's a frame that the paper nametag that goes into our regular lanyard covers fits into), it took me several tries to get the owl right, I scrapped whole completed designs for it. We also talked about how the Makerbot Mini was created as a prototype machine, as it only uses a brittle plastic filament rather than making things out of hardier materials like metal. It's meant to test out ideas that you would then manufacture somewhere else.

I completed the main re-design of course, on my own over the next few weeks. I borrowed from Thingiverse for the rook and the king, mostly using a stump I found wholly designed for the rook but just using a more intricate oak leaf that I incorporated into a larger design for the king. I used the height for standard pieces from the chess entry on Wikipedia, even though this would never be a tournament set. I used the child's squirrel knight design with only the change of making it stand up to mimic the posture of the classic knight.

Here's the finished set, I'm pretty proud of it and the kids should be too: