ForgeSlicer
ForgeSlicer
CAD + Slice
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Beginner-friendly CAD · AI · Voice

Design. Speak.
Slice. Print.

Design 3D-printable objects with simple CAD tools, voice commands, and integrated AI design assistants — fal.ai (default) and Meshy.ai are third-party providers woven into the ForgeSlicer workflow. Say “create a simple phone stand”, “add a 5 mm keyring hole”, or “make this box hollow with 2 mm walls” — no CAD experience required. Slice in your browser, on our server's OrcaSlicer engine, or export STL / 3MF to your desktop slicer.

Start Designing Free

Already started a project elsewhere? Drop in an existing STL, 3MF, OBJ, GLB, SVG, or ZIP bundle and pick up right where you left off — measurements, booleans, voice editing, and slicing all work on imports. The Public Gallery in the header has hundreds of community designs to remix too.

5
Primitive Types
AI
Starter Models
🎙
Voice Editing
ForgeSlicer is free and self-hosted. Support the project on Patreon →
ForgeSlicer mark
End-to-end in the browser

From idea to printable file — four steps.

No installs, no plugins, no CAD career change. Bring an STL you already have, or start from a voice prompt.

  1. Step 1
    Design or import
    Start from primitives, a voice prompt, an AI provider, or drop in an STL / 3MF / OBJ / SVG.
  2. Step 2
    Edit in the browser
    Booleans, extrude, cut, fillet, chamfer, text, holes, mirror, ruler & dimensions — all live.
  3. Step 3
    Check printability
    Thin walls, non-manifold geometry, overhangs, floating parts flagged with one-click Auto-Fix.
  4. Step 4
    Export or slice
    STL / 3MF locally, or Send to OrcaSlicer / Bambu Studio / PrusaSlicer with one click.
All four steps run in your browser — the same tab, the same session, no round-trip to another tool.
Real projects, real users

What people build with ForgeSlicer

Pick a starting point and dive in — every card opens the workspace with the right tool preselected.

Name tag / keychain
Type a name, pick a font, add a 5 mm keyring hole — done in under a minute.
Start from template
Replacement part
Import a scanned STL of the broken part, tune dimensions, re-print in your material of choice.
Import & fit
Drawer organiser
Boolean-cut compartments into a slab. Add labels or dividers with the Text tool.
Customize this
Bracket or mount
Combine box + cylinder primitives, add screw holes with countersink, check the wall thickness.
Start from template
Photo lithophane / medallion
Drop in any photo — auto-remove background, choose reflective or backlit, print in colour.
Open Lithophane
Classroom project
Turn an SVG logo or hand-drawn shape into a printable object. Great for STEM demos.
Learn how
Hollow a solid model
Voice-command shortcut: 'make this hollow with 2 mm walls' — turns any solid into a print-ready shell instantly.
Try the shortcut
Add a mounting hole
Voice-command shortcut: 'add a 5 mm hole through the top' — perfect for keychains, wall hangers, and cable management.
Try the shortcut
Print without supports
Voice-command shortcut: 'make this printable without supports' — auto-reorients + trims overhangs to save filament and time.
Try the shortcut
Which CAD tool fits?

Why ForgeSlicer?

We're not for everyone — but if you print more than you engineer, we're probably the fastest path from idea to plate.

FeatureForgeSlicerTinkercadFusion 360Blender
Runs in the browser, no install✓✓——
Boolean ops (add / subtract / intersect)✓✓✓✓
3D printing focus (STL / 3MF / slicer handoff)✓partialpartial—
Voice-controlled CAD edits✓———
AI mesh generation (fal.ai + Meshy.ai)✓———
Built-in printability report + Auto-Fix✓—partial—
Free tier without account✓—hobbyist✓
Beginner-friendly UI✓✓——
Tinkercad, Fusion 360, and Blender are excellent tools — this table is only about the 3D-printing-first workflow. Full deep-dive on the Tinkercad alternative page.