Ohaco
Ohaco

Ohaco

Build 3D-printable models with blocks

Designing the robot “Sankome” in Ohaco (work in progress)

Work-in-progress screenshot — subject to change

Ohaco is an app under development that lets you build 3D-printable models simply by snapping block parts together.

The design space is constrained, but the controls feel like a building game so anyone can model. Working mechanisms are planned too.

In development — coming soon

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Easy 3D modeling with blocks

Assembling the robot “Sankome” from blocks in the Ohaco editor
1. Build with blocksStack blocks into a model and paint patterns with stamps.
Ohaco's print preview with parts separated by color
2. PrintParts export split by color, so you can print multi-color even without a multi-material printer.
The printed and assembled “Sankome,” front viewThe printed and assembled “Sankome,” angled view
3. AssembleSnap the printed parts together and you're done — a palm-sized figure.

Read more about how it was made on the blog.

Color it with a pen

Drawing a face on the surface of a block with Ohaco's pen
Draw directly on the model's surface with a pen. Line width follows pen pressure, and colors export split per filament for multi-color printing (Bambu AMS).

Build working mechanisms

Add a hinge and you can design moving parts — like a lid that opens and closes.

Work-in-progress screenshot — subject to change

In development

Features we're currently building and testing, on the way to release.

Servos & gears
Add servos and gears, then move them on screen to check range of motion and collisions.
Drop-in hardware
Place a display, servo, ESP32, or speaker and Ohaco generates a printable holder to mount it.
Snap-fit & auto split
Glue-free joints, plus automatic splitting of large models into printable parts.
Print preflight
Automatic checks for manifoldness, wall thickness, and overhangs to catch print failures early.

In development

Planned for distribution on the App Store (iPad / Mac) and direct download (Windows / Mac). Follow development updates at shirokumamake.com.

@shirokumamakeshirokumamake.com