making an origami business card w/ 3d printing (CAD TIME #2)

Dora Strelko had five minutes between an idea and action. No committee. No approval chain. Just a thought... "What if my business card folded like origami?" And then she built it.

There's something sacred about watching someone build a thing from scratch and refuse to hide the ugly parts.

Dora Strelko is an engineer presenting at RAPID + TCT on 3D printed origami in robotics. She needed business cards. Most people would open Canva. She opened Onshape and started folding parallelograms.

The concept is called Miura-ori... a tessellation pattern where identical parallelogram panels connect through mountain and valley folds. It lets you compress a large surface into a tiny stack. NASA uses variations of it for deployable space structures. Dora used it for a business card. Same math. Different mission. Both brilliant.

The Build

She started with a CAD model from her own published research paper. Pulled a section of the tessellation, planned out letter placement across the panels, and decided to cut the letters through rather than extrude them... because raised text would interfere with the fold mechanics.

Think about that for a second. Every design choice had to serve two masters: readability AND foldability. The card had to look good flat AND compress into a pocket-sized stack. That constraint forced creativity at every turn.

For the content, she went simple. A Linktree URL spread across the panels. No QR code... too complex for the geometry. No scattered social handles... too much noise. One link to rule them all. Smart.

The Slice

This is where the nerdy magic happens. In PrusaSlicer, Dora combined a flexible base material... Sakata 3D's X-920, a PLA/TPU blend with 89A shore hardness... with rigid PLA panels on top. The flex material creates living hinges between the panels. The rigid PLA holds the letters.

Here's where the craft lives in the details:

- Flow rate for flex: bumped to 110% because flexible filaments love to underextrude - Flow rate for PLA: dropped to 95% - First PLA layer temp: kept screaming hot to bond with the flex underneath - Every other PLA layer: dropped to 215°C for cleaner surface finish - Ironing: enabled for crisp letter definition on the top surface - Speed for white layers: reduced to 75%

Every one of those numbers represents a choice born from understanding materials at a fundamental level. This isn't just pressing print. This is multi-material printing as a discipline.

The Failures

And here's where I fell in love with this video.

Dora showed the ugly prints. The first prototypes... red PLA on blue flex... came out stringy, rough, and honestly kind of sad. The ironing didn't play nice with small letter elements. The floating parts of letters like E, A, and D broke down visually.

She didn't hide them. She held them up to camera and said, "They look pretty bad. I'll be very honest."

That right there. That's the whole lesson.

Iterative prototyping isn't a buzzword... it's the willingness to show receipts on your failures. Dora's first two-material approach didn't work aesthetically. So she pivoted to a three-color system: white panels, black letters, blue flex base. Different approach. Same mission. Dramatically better result.

The final card? Clean. Crisp. Letters you can read. Folds you can feel. A card that compresses into a satisfying little stack and remembers its shape.

An hour and 43 minutes per card, including two material changes. Lengthy for a business card? Sure. Worth it? Absolutely.

Why This Matters Beyond Business Cards

The Miura-ori fold isn't just a party trick. It shows up in satellite solar panel deployment. In soft robotics. In medical devices that need to be inserted small and expand large. Dora's presentation at RAPID + TCT covers exactly this... origami principles applied to real-world engineering problems.

But here's what sits with me.

The business card itself IS the résumé. Hand someone a card that folds like origami, printed in three materials with living hinges... and you've already demonstrated everything a paper résumé tries to explain. You've shown CAD fluency, material science understanding, design thinking, and the willingness to iterate past failure.

The medium became the message.

The Deeper Thread

This is what happens when curiosity meets craft. Dora didn't need permission to try this. She didn't wait for perfect conditions. She had an idea, opened her tools, and started making.

Five minutes between spark and action. Ugly prototypes embraced instead of hidden. Settings tweaked, materials swapped, approach pivoted... until the thing worked.

That cycle... imagine, build, fail, learn, rebuild... is the engine underneath every meaningful thing humans create. Whether it's a folding business card or a life rebuilt from scratch.

Light doesn't fight darkness... it just shows up. And sometimes it shows up as a three-color origami card fresh off a print bed.

Next time you have an idea that feels too weird, too niche, too "why would anyone do that"... remember that someone 3D printed a folding origami business card because the thought popped into her head five minutes earlier. She didn't wait for confidence. She started with curiosity and let the failures teach her forward. Your weird idea might be the most honest thing you make this year. Build it. Show the ugly prints. Fold it up and hand it to the world. 💙

--- Source: https://www.youtube.com/watch?v=7n90W33EiPs