Background and Motivation
Realizing that neither me nor Xavier was very good at sewing—and while we were going to learn to sew better on this project, we were only going to reach a certain level—I thought it more interesting to try to do fun stuff around cloth and sewing and 3D printing. Mainly because I realized that if we’re storing electronics inside of a cloth bag, they need some sort of rigid frame, though in this case we used TPU.

Problem with Rigid-Fabric Interfaces
The interface between that rigid frame and sausage-flexible fabric is not that easy.

• You could glue it, but then it’s not really flexible with the fabric.

• You could rivet it, but then it’s kind of joined only at four points that could rip.

Inspiration and Material Choice
I thought the idea presented by Professor Taegyeom of 3D printing on fabric was really cool.
So for the inner part, we 3D printed using tuile and TPU to create a sort of fabric backing or webbing holding the board holder and the battery holder.
This would be the inner part that we would attach by sewing with or some other mechanism with the bag itself.

Bag Structure and Strategy
The bag itself, I realized, is roughly box-shaped. Or it could be. It could also be pillow-shaped.
But if we made it box-shaped, then why don’t we just 3D print onto the fabric itself to create some sort of stiff panel?
So that’s what we did.

Final Assembly Concept
The idea in completion would have been:

• Okay, this is the outer layer which is bonded to the panels.

• We would have laid over an inner layer of canvas and then sewn around the edges of the panels to sort of affix them such that the inner layer is more kind of draped and less rigid as befits the inside of a bag.

• And then we would have folded this together and stitched along the seams to join the box together inside out, and then flipped the entire sort of box-bag configuration inside out to create a complete box, just like you would a pillowcase.

Progress
So that was the whole idea. But this is as far as we got, and here are the pictures.