Describe it. Print it. Learn as you go.
No CAD knowledge required — and by the time your part is printed, you’ll understand more than you expected.
- Describe geometry in plain English — no commands to memorise
- Click any feature on the model to target your next edit precisely
- Forge explains CAD concepts as you use them, in context
- Export STL and open in your slicer in one click
- Free to start — 20 AI generations a month, no card required
3D printing hobbyists want to design their own parts. CAD tools assume you’re an engineer — and never explain anything.
Most CAD software was built for mechanical engineers, not makers. Forge meets you where you already think — in plain language and on the model itself — and teaches you the underlying concepts as they come up.
Before
- Spent an afternoon watching CAD tutorials before touching your part
- Gave up on Fusion 360 after the third menu you couldn’t find
- Made it in Tinkercad but couldn’t get the tolerances right
After
- Described what you wanted, Forge built it
- Learned what a fillet actually does while adding one to your part
- Downloaded an STL with correct tolerances in the same session
Three steps, no CAD background.
Describe what you want
Plain English. "A bracket with two 4mm holes, 60mm apart." No commands, no menus.
Click to refine
Click any face, hole, or edge on the model. Forge knows exactly what you mean and targets the edit precisely.
Download and print
Export STL and open directly in PrusaSlicer, Bambu Studio, or Orca. One click.
You’ll pick this up faster than you think.
Forge notices when you use informal language and explains the concept behind it — in context, while you’re building. Not a course. Not a tooltip. Just a short note that makes the next thing click.
“round off the sharp edges”
Fillet
A rounded transition between two faces. Larger fillets mean less stress concentration, which matters if the part takes any load.
“make the hole slightly bigger so the bolt fits”
Clearance fit
Adding 0.2–0.4mm to a nominal diameter so a bolt passes through without forcing. FDM prints tend to run tight, so clearance matters.
“hollow it out to save plastic”
Shell
Removing the interior of a solid while keeping a uniform wall thickness. Forge uses OpenSCAD’s minkowski difference to do this correctly.
“mirror the bracket to make a matching pair”
Mirror operation
Reflecting geometry across a plane. Forge mirrors across the axis you’d expect based on the model’s orientation.
Designed around how makers actually work.
Learn while you build
When you describe something informally, Forge explains the proper CAD concept behind it. Short, in context, never in the way.
Click-to-anchor
Click any face, bore, or edge on the model. Forge classifies the feature and injects exact spatial context into the next prompt — no coordinates needed.
Server compile with BOSL2
Complex operations that fail in the browser route automatically to a native OpenSCAD server. Threaded holes, offsets, Minkowski — all work.
18 parametric presets
Start from a bracket, enclosure, snap-fit clip, cable channel, or hinge knuckle. Each preset ships with a rationale explaining the design decisions.
Design audit
Ask Forge to review the current model for print issues: walls too thin, overhangs, non-manifold geometry. Returns a structured list with severity and suggested fixes.
Slicer handoff
Open directly in PrusaSlicer, Bambu Studio, or Orca with one click. No manual STL export and re-import.
Built for whoever you are with a 3D printer.
First-time makers
Never opened a CAD tool before
Start with plain English. Forge builds the model and explains what it’s doing. Most people have a working part within the first session.
Hobbyists
You know what you want, not how to model it
Describe it conversationally, click to refine, export when it’s right. No tutorials required.
Tinkerers
You’ve used CAD before but want to move faster
Skip the menus. Describe changes directly, anchor to features by clicking, and let Forge handle the OpenSCAD.
I said “round off the sharp edges” and it not only did it — it told me what a fillet was and why it matters for printing. I didn’t expect to actually learn anything.
Early user
Start free. Upgrade when you're printing every week.
Every plan includes the full editor, presets, design audit, and slicer handoff. Plans differ by how many AI generations you get each month.
Free
$0/mo
20 AI generations per month
- Full editor, 18 presets & design audit
- STL export + one-click slicer handoff
- Publish to the community gallery
Maker
$15/mo
150 AI generations per month
- Everything in Free
- Unused credits roll over one month
For makers iterating on a project every week.
Builder
$49/mo
500 AI generations per month
- Everything in Maker
- Credits roll over up to three months
For power users and small workshops.
One generation is one design request — Forge writing or editing your part. Unused Maker and Builder credits roll over. Cancel anytime.