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Create. Customize. Print.

Print the impossible.
Simply online 3D.

SO3D turns your ideas into production-ready STL files through a lightning-fast parametric generator. No CAD. No downloads. Just pure geometry.

Start generating free See how it works
0K+
Designers
0K
STL Exports
0s
Avg. Generate
0%
Manifold Rate
12,000 STL files generated
PARAMETRIC GENERATION WATERTIGHT MESHES GYROID LATTICES REAL-TIME PREVIEW MANIFOLD GUARANTEE PARAMETRIC GENERATION WATERTIGHT MESHES GYROID LATTICES REAL-TIME PREVIEW MANIFOLD GUARANTEE
REST API VERSION CONTROL INSTANT STL EXPORT TEAM WORKSPACES ZERO CAD REQUIRED REST API VERSION CONTROL INSTANT STL EXPORT TEAM WORKSPACES ZERO CAD REQUIRED
01 — Workflow

From idea to print bed
in four steps.

No CAD software, no export plugins, no version mismatches.

STEP 01

Pick a parametric base

Start from a bin, bracket, gear, enclosure or a blank canvas with a full parameter graph.

STEP 02

Tune every parameter

Drag sliders for dimensions, wall thickness, fillets, and infill while the preview updates live.

STEP 03

Auto-validate the mesh

Geometry is checked for manifold integrity and repaired automatically before export unlocks.

STEP 04

Export & print

Download a slicer-ready STL, OBJ, 3MF or STEP file — or send it straight to your printer queue.

02 — From the showcase

Made by the community,
right now.

Every one of these was designed, exported and shared by a real SO3D user.

Preview of Circle box with texts
Circle box with texts
Customizable dimensions and text.
By Krypto
22.8 cm³
Volume
28.2 g
Est. weight
13,428
Triangles
Open in generator
Preview of Oval box with flat lid type
Oval box with flat lid type
Customizable dimensions, flat lid, and handle style.
By Krypto
38.3 cm³
Volume
47.5 g
Est. weight
7,588
Triangles
Open in generator
Preview of Parrellogram box with flat lid type
Parrellogram box with flat lid type
Customizable dimensions, flat lid, and handle style.
By Krypto
30.9 cm³
Volume
38.4 g
Est. weight
6,360
Triangles
Open in generator
Preview of Arrow box with flat lid type
Arrow box with flat lid type
Customizable dimensions, flat lid, and handle style.
By Krypto
20.3 cm³
Volume
25.1 g
Est. weight
6,452
Triangles
Open in generator
Preview of Pentagon box with flat lid type
Pentagon box with flat lid type
Customizable dimensions, flat lid, and handle style.
By Krypto
25.3 cm³
Volume
31.4 g
Est. weight
6,396
Triangles
Open in generator
Preview of Octagon box with flat lid type
Octagon box with flat lid type
Customizable dimensions, flat lid, and handle style.
By Krypto
27.7 cm³
Volume
34.3 g
Est. weight
6,480
Triangles
Open in generator

Browse the full showcase

03 — Capabilities

Every parameter,
under your control.

Seven engines working together so you never touch a CAD tool.

01

Parametric controls

Drive wall thickness, fillets, patterns and topology with real-time sliders and numeric input.

Every control is bidirectional — drag a handle in the viewport or type an exact millimeter value, both stay in sync instantly.
Learn more
02

Instant STL export

One click produces a manifold, watertight STL optimized for every major slicer and printer.

Average export time is 1.8 seconds, even for lattice-filled parts with 500K+ triangles.
Learn more
03

Lattice & infill engine

Generate gyroid, voronoi, and custom lattice structures tuned for strength-to-weight ratios.

Presets for aerospace-grade gyroid infill ship alongside a node graph for fully custom cell shapes.
Learn more
04

Playback steps

Every edit is captured as its own step. Scrub through a model's build history, or hit play and watch it unfold.

The History tab records each parameter change individually — jump straight to any past step, or replay the whole sequence from first slider drag to final export.
Learn more
05

Version control

Branch, diff and merge design iterations. Roll back to any historical parameter set instantly.

Full parameter history is stored per model — compare any two revisions side-by-side in the viewport.
Learn more
06

360° tour

Every model gets a one-click auto-orbit tour. Share a link and let anyone spin through it hands-free.

The same orbit that powers the Showcase page's own Tour popup — drop it in an iframe with `&tour=1` on any share link to embed it anywhere.
Learn more
04 — Playground

Try the engine.
Right here, right now.

Drag the sliders — the preview and the export stats update live, with zero page reloads.

Live preview

Parametric storage bin

A miniature version of the real generator. Adjust dimensions and wall thickness to see the model and its stats update instantly.

Width80 mm
Depth60 mm
Height45 mm
Wall thickness2.4 mm
216.0 cm³
Volume
27.2 g
Est. weight (PLA)
1.4 s
Export time
Live render Open full editor drag sliders to reshape the model
05 — Signal

What makers are saying.

From solo hobbyists to all ages.

My dorm room was a mess until I started designing my own storage bins with SO3D. Now every drawer has a custom organizer sized exactly for my stuff.
JC
Jaden Cole
Student
I never thought I'd design anything myself, but now I make custom drawer organizers and bottle racks for the kitchen. It feels like sketching, except it actually holds things up.
SA
Sofia Andrade
Housewife
My grandkids showed me how to use it, and now I design my own storage boxes for the garage -- one for every screw, bolt and bottle. I never thought I'd learn something like this at my age.
JR
James Reyes
Grandpa
Between school runs and homework, I still find time to design storage boxes to finally get the kids' toys off the floor. SO3D is simple enough to use during nap time.
DT
Dana Torres
Kid Mother
I've tried every 3D modeling tool out there for my storage organizer builds. SO3D is the first one that keeps up with my ideas instead of slowing me down.
LW
Liam Whitfield
Hobbyist
I sell custom storage boxes and bottle organizers on my online shop. SO3D lets me turn a customer's idea into a listing-ready design the same day.
PN
Priya Nair
Online Seller