Browser workspace · Desktop app (Premium)

Shape the print, not just the mesh.

A parametric playground for FDM: stack effects, sculpt meshes, and export G-code straight from your browser.

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Free to tinker No account needed Runs in your browser

Trusted by makers running real prints on real machines

4.9 · Maker community & reviews

Prusa Bambu Lab Creality Voron Anycubic Elegoo QIDI FLSun

Why makers stick around

Preview every move before you waste a gram.

See the toolpath before the filament.

Orbit the live 3D preview, scrub through layers, and catch travel quirks while changes are still cheap.

  • Layer scrubbing: Jump to any height and inspect exactly what the nozzle will do.
  • Seam placement: Spot where the seam lands before you commit plastic.
  • Travel visualization: See non-print moves so stringing surprises show up early.

Modulator stack in plain view. No buried submenus.

Named modulators, drag-to-reorder, and every parameter in one panel; fast iteration is the default.

  • Named modulators: Each effect has a clear label so the stack reads like a recipe.
  • Drag to reorder: Change the order of operations with a grab handle, not a rebuild.
  • Inline parameters: Tweak values right where you see them, no nested dialogs.

One Print setup. Many experiments.

Machine, material, and nozzle presets stay with your project. Hop between design modules without retyping profiles.

  • Persistent presets: Pick your printer once; every module respects it.
  • Material profiles: Temps, speeds, and retraction travel with the project file.
  • Nozzle context: Swap nozzle size and the toolpath recalculates automatically.

Export what the job needs.

G-code when the module owns the toolpath, STL when you want your slicer in the loop, especially from Mesh Sculptor.

  • Direct G-code: Vase-mode modules output ready-to-print files with no slicer step.
  • STL hand-off: Mesh-first workflows export geometry for your slicer's supports and plates.
  • One-click download: Choose the format and grab the file, no extra dialogs.

Design modules

Eight doors into the same workbench.

Whether you think in splines, tiles, graphs, or blocks, there is a module that matches your brain.

G-code Sculptor: profile curve and modulator stack in the app.
G-code

G-code Sculptor

Draw a profile, stack effects, and ride vase / spiral output.
Mesh Sculptor: mesh preview and sculpt controls in 3dSynth.
STL

Mesh sculptor

Stack mesh and vertex effects; export STL to slice wherever you like.
Node Sculptor graph driving geometry in 3dSynth.
G-code

Node sculptor

Wire a node graph that drives geometry and G-code.
SynthBlocks workspace with blocks and canvas in 3dSynth.
G-code

SynthBlocks

Scratch-style blocks for custom toolpath logic, without dense syntax.
Custom G-code editor and 3D preview in 3dSynth.
G-code

Custom G-code

Drop in G-code, edit, analyze, and preview every move in 3D.
Fabric sculpt: line-based paths and filters in 3dSynth.
G-code

Fabric sculpt

Weave line generators and filters into stacked extrusion paths.
Predefined models catalog in 3dSynth.
G-code

Predefined models

Parametric catalog parts: skip the graph when you just want the thing.
Hex grid: painted tiles and floor preview in 3dSynth.
G-code

Hex grid

Paint tiles, preview the floor, flow into a vase toolpath.

Full reference: modules overview · Getting started (in-app docs)

Learn

Learn fast, break nothing expensive.

Deep docs, goal-first tutorials, and a Library: everything you need within arm's reach of the viewer.

Documentation

Deep dives on modules, effects, and Print settings when you want the manual, not the hype.

Open docs →

Tutorials

Goal-first walkthroughs beside the viewer. Follow along with a real file.

Open tutorials →

Library

Load shared .3dsynth projects and remix from real prints.

Open library →

Changelog & roadmap

See what shipped and what is cooking next.

Changelog Roadmap

Library

Proof from the spool.

Thumbnails from the public library: G-code Sculptor and SynthBlocks projects people actually ran on their machines. Click through, then hit Load in app to start from someone else's baseline.

Pricing

Free to tinker. Premium to ship deep.

Same limits and unlocks you see in the in-app Print / Export / Premium hints: Mesh, G-code, Nodes, SynthBlocks, and the desktop build all follow the same table. No surprise paywalls at download.

Free

$0

Full browser app: G-code Sculptor, Mesh Sculptor, Node Sculptor, SynthBlocks, Fabric, Hex, predefined models, and Custom G-code: stack effects, wire graphs, and inspect the live toolpath in 3D. Tuned for learning and ad-hoc runs that never leave the tab.

Limited time

Lifetime license

$39

$69

Lifetime license. Intro $39 through 15 July 2026 (then the regular price in Gumroad). See top banner.

Full export headroom, persistent projects, the inspector, desktop installs, and a license that covers commercial work, the same “everything unlocked” state the app’s Premium gates describe.

G-code Sculptor: up to 2 modulators in the effect stack (vase / spiral G-code straight to the machine profile)
G-code Sculptor: unlimited modulators, full reorderable stack, plus Julia / fractal routes when a recipe needs them
Profile export: G-code, plus STL, OBJ, or glTF from mesh-based modules (e.g. Mesh Sculptor) using your Print settings
Every design module can write into .3dsynth: save, load, and move between G-code, mesh, nodes, blocks, and fabric in one project
SynthBlocks, nodes, fabric paths, and custom G-code: build, run, and one-click download while you stay in the web app
SynthBlocks & Node exports + workspace hand-off (not just in-tab preview)
3D toolpath preview, in-app docs and tutorials, and the Library in read-only mode
G-code Inspector and advanced checks before the file ever hits the printer
Save, reload, and sync .3dsynth project files (workspace + all modules in one file)
Save/load .3dsynth, and publish builds to the Library from inside the app
Fractal (Julia) modulators, G-code Inspector deep validation, and uploads back to the library
Desktop app (Windows + macOS) for offline, large exports, and “same workspace” outside the browser
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FAQ

Questions.

Straight answers, no marketing fog.

What is Mesh Sculptor vs G-code Sculptor?
Mesh Sculptor builds a mesh and exports STL for slicing elsewhere. G-code Sculptor uses a profile and effects stack for vase-mode G-code without an external slicer for that path. Mesh overview
Node Sculptor or SynthBlocks?
Both can drive G-code. Node Sculptor is a node graph; SynthBlocks is Scratch-style blocks. Pick the mental model you prefer. Nodes · SynthBlocks
What printers are supported?
Hundreds of built-in machine profiles; output is standard FDM G-code compatible with common printers.
Is the G-code safe?
Start/end sequences are tailored to your machine profile. Preview every move in the 3D viewer before export.

Ready to waste less filament?

Open the browser app for free, or unlock Premium for full export depth, projects, inspector, and the desktop build.

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