u/DeOviStudio

I wanted to see how far geometry alone could go.

This phone case is made from 2.2 mm red vegetable-tanned leather with black-painted edges to emphasize the interlocking pattern created by the assembly itself.

There are no stitches and no glue holding the structure together—just a zipper-inspired locking geometry.

My design philosophy is simple:

A great design should achieve maximum impact with minimum effort.

This construction method isn't limited to phone cases. With the right type of leather, it's surprisingly strong and can be adapted to many different products.

I'd love to hear what other applications come to mind.

Some of you may remember my previous post featuring this bag design with the braided edge construction.

This time, I wanted to show a different interpretation of the same concept.

The bag is made from brown leather laminated with microfiber, so unlike the vegetable-tanned version I shared before, this one is finished with an edge stitch to permanently secure the laminated layers. The braided edge remains the defining construction and visual element, while the stitching complements the structure required by this material.

For me, this also highlights one of the strengths of the design: its versatility. The same construction principle can create very different personalities simply by changing the leather, texture, color, and finish.

My design philosophy remains the same:

Minimum Effort, Maximum Impact.

I enjoy creating designs that are accessible to build while still looking distinctive and memorable. Instead of adding unnecessary complexity, I try to find construction methods that let the design itself create the visual impact.

This video shows the complete build process—from the individual leather pieces to the finished bag.

I'd love to hear which version you prefer: the natural vegetable-tanned leather from my previous post, or this softer laminated brown leather version.

One thing I find interesting is how much the material changes the character of the exact same design.

The previous version was made from 2.4 mm vegetable-tanned leather and relied entirely on the braided edge construction. This one uses leather laminated with microfiber, which requires edge stitching to lock the layers together, while the braid remains the signature feature.

Same pattern. Same construction idea. Completely different feel.

That's exactly what I wanted this design to achieve.

This entire bag is built around a completely stitchless free concept.I use 2.4mm vegetable-tanned leather for the body panels. To assemble it, I cut the pattern, use an oval punch for the slots, and then weave everything together using a single, continuous leather strap. For this specific piece, I chose a green strap to create a sharp contrast against the blue leather.It requires no glue, no thread, and no metal—just geometry and leather. I'd love to hear your thoughts on this assembly method!