AI 3D MODEL GENERATOR FOR 3D PRINTING · TEXT-TO-CAD · FREETell Printy what you need.
3D print it. Done.
(She has opinions on infill.... don't ask.)
The bracket nobody sells. The knob that snapped. The box that fits that drawer. Tell Printy in plain language and she designs it: a custom 3D model, built to your measurements, ready for your slicer. No CAD skills needed. Print it tonight.
No account. No install. Free for personal use. STL, OBJ or 3MF. Drop it into Bambu Studio, PrusaSlicer, Cura or OrcaSlicer.- 1,016 MODELS IN THE GALLERY
- 1,900+ FONTS
- 3 FILE FORMATS
HOW IT WORKS · TEXT-TO-CAD FOR 3D PRINTINGType a thing. Get a thing.
CAD you talk to. Plain language in, print-ready 3D model out. No tutorials, no “sketch, constrain, extrude”.
1. Describe the part
Measurements if you've got them. The problem if you haven't.
2. Watch Printy design it
A real 3D model, live in your browser. Spin it. Flip it. Check the holes.
3. Tell her what's wrong
She fixes it. Every version's saved, so you can't break anything.
4. Download and print
STL, OBJ or 3MF, straight into your slicer.
From the blog.
What shipped, what's next, and how to get more out of Printy.
Ich spreche Deutsch.
Beschreib dein Teil auf Deutsch, und ich baue dir daraus ein druckfertiges STL. Ab sofort, kostenlos, ohne Konto.
The week you showed up
Printytron hit the Hacker News front page. What six thousand of you built in the fortnight since, how you built it, and what I shipped to say thanks.
How to make your own 3D models to print — five ways, and where each one hurts
Five real ways to make your own 3D models for printing — download, Tinkercad, Fusion 360, scanning, or plain English. Who each one's for, and where it hurts.
AI 3D generators make art. Printy makes parts.
An AI 3D model generator makes art for screens. I build parts that print and fit. Two different jobs — and why your spaceship won't fit your desk.
You don't need to be a 3D printing person
Her first message was four words: “Cartoon car cookie cutter.” Nine messages and six minutes of back-and-forth later: a printable set of three.
I can see what you're pointing at
Parts in the preview now have names and colours. Click one, say "make this thicker", and I know which one you meant.
You can stop halfway now
My Models is live. Drafts stay put, publishing is reversible, and nothing you make gets thrown out.
Custom 3D-printed parts, without learning CAD.
You've got the printer. You've got the problem. What you haven't got is the file.
Thingiverse has a bracket.
For somebody else's shelf. Yours is 3mm wider, and forty minutes of scrolling Printables won't change that.
Traditional CAD can make anything. So can Printy.
She just skips the tutorials. Tinkercad or Fusion 360 is a fair trade if you design parts every week. For one dryer knob, it's a hostage situation.
AI 3D generators make dragons.
Gorgeous ones. Meshy and Tripo are very good at dragons. Ask for an M4 hole 12mm from the edge and you get a vibe.
Printy makes the part.
Your measurements. Your hole spacing. Your hardware. A proper dimensioned solid, built the way CAD builds it, without the months of learning it.
MAKE THE PART →USEFUL THINGS TO 3D PRINT · MADE TO MEASUREWhat people make most.
If it's a solid object and you can describe it, she'll design it: real dimensions, holes, threads, text, curves, several pieces if the job needs them. 1,016 models in the gallery so far. These come up most.
Adapters, jigs and workshop tools
Two hoses, two sizes, nothing at the hardware store that joins them. Give her both diameters. Drill guides, thread gauges and depth stops while you're there.
BROWSE WORKSHOP & TOOLS →
Brackets, knobs and replacement parts
The knob snapped. The part's discontinued. Measure the old one, describe it, print a new one for pocket change.
BROWSE HOME & FIXTURES →
Boxes, trays and organizers that actually fit
Your drawer is 100 × 87mm. Nobody sells a 100 × 87mm tray. Now somebody makes one.
BROWSE STORAGE & ORGANIZATION →
Phone stands, cable clips and electronics enclosures
A clip for a 25mm desk edge. A case for the board you just soldered, with the ports where your ports are.
BROWSE DESK & TECH →
Name plates, cake toppers and custom 3D text
Any name. Any date. 1,900+ Google Fonts. Pick one, or tell her the vibe and she'll choose.
BROWSE GIFTS, SEASONAL & PERSONALIZED →
Car, RC and model railway parts
The trim clip your car's maker stopped selling. A motor mount for the quad. OO-scale terrace houses. Built to the scale your hobby runs on.
BROWSE AUTOMOTIVE, RC & HOBBY →
Name keychains, tags and everyday carry
Small, fast, personal. Name keychains, bag tags, keycap toppers, a threaded stash for your keyring.
BROWSE KEYCHAINS & EDC →
Kitchen and bathroom accessories
Spice labels that sit flush. A bottle adapter from 1.7in to 1in. The sink caddy that fits your sink.
BROWSE KITCHEN & BATHROOM →
Planters, lampshades and display stands
Hex-mesh planters, ribbed lampshades, a stand for the thing you're proud of. Good-looking, and still the right size for the shelf.
BROWSE DECOR & DISPLAY →Something weirder
A bocce ball caddy. A Mars rover chassis. A cervical roll. All real, all in the gallery. If you can describe it, she'll have a go.
FREE AI 3D MODELLING · STL · OBJ · 3MFEverything between the idea and the print bed.
Printytron is a free AI 3D model generator for 3D printing. Describe a part in plain language, get a custom model built to your measurements, download it as STL, OBJ or 3MF. It runs in your browser. No CAD skills, no install, no account.
Built to your measurements
Millimetres in, millimetres out. 25mm means 25mm. M3 means M3. Dimension lines sit on the model, in mm or inches, so you check it before you print it.
STL, OBJ and 3MF
STL for everyone, no account. OBJ and 3MF with a free one. All three drop straight into Bambu Studio, PrusaSlicer, Cura or OrcaSlicer.
Multi-colour, multi-part models
A box and its lid. A stand and its hook. Every piece named and coloured, and kept separate in the 3MF, so your multi-colour printer can give each one its own filament.
Change it by talking
Click the lid. Say "make this 2mm thicker." Done. Hate it? Go back a version. Iteration is free. Use it.
3D text in 1,900+ fonts
Names, signs, plaques, cake toppers. Ask for a font by name, or describe the vibe and let her pick.
See it printed before you print it
Photo mode shows your part as if it's already off the bed. Pick the filament finish, pick the scene. Good for checking. Better for showing off.
THE GALLERY · DOWNLOAD OR REMIXFree 3D-printable models, fresh off the bench.
Every one is free to download. See one that's nearly right? Hit Remix and tell Printy what's different.
Try a sample prompt.
Real prompts. Real models. One click and it's typed in for you.
Describe the problem. Measure the world.
You don't need to know what shape it is. Say what's going wrong and how big things are. The shape is her job.
HOW TO WRITE A GOOD PROMPT →Free for personal use. No account needed to start. Independent project — email with bugs, I read everything.
Who uses
Printytron.
Five kinds of people show up here over and over. They almost never describe themselves as designers. They describe themselves by the thing they're trying to make.
- 01
The functional maker.
Owns a Bambu, prints PETG every weekend. Designs brackets, hooks, holders, and cable clips for things around the house. Bounced off Fusion 360 four times. - 02
The Etsy side-hustler.
Sells custom name plates, cake toppers, party favours. Used to turn down half their requests because modelling time killed the margin. Now turns it around in minutes. - 03
The replacement-parts person.
Their dryer knob broke. Their printer has been gathering dust since 2021. Now it earns its rent. - 04
The reluctant CAD user.
Has a printer, prints maybe twice a month. Knows exactly what they want. Doesn't want to spend 90 minutes in Tinkercad to get it. - 05
The friend-of-a-maker.
Doesn't own a printer. Their friend does. Now they can hand over a ready-to-print file instead of an awkward “could you design something for me?” ask.
AI 3D MODELLING FOR 3D PRINTING · FAQAsked and answered.
Can AI really design a 3D model I can print?
This one can. Printy designs solid parts at real size, flat on the bed, ready for your slicer. 1,016 models are sitting in the gallery if you'd like proof.
Will the part actually fit?
Give her real numbers and she builds to them. 25mm means 25mm. M3 clearance means M3 clearance. Dimension lines on the model let you check before you print. For snap-fits and tight tolerances, do what every maker does and print a test piece first.
Do I need CAD skills to design my own 3D prints?
No. If you can describe it to a friend at the hardware store, you can describe it to Printy. Measurements help. Knowing what "extrude" means doesn't.
What if she gets it wrong?
Tell her. "The holes are too close to the edge, move them 5mm in." She fixes it. Every version is saved, so you can always go back.
STL, OBJ or 3MF: which one do I want?
STL if you just want to print. It works everywhere and needs no account. 3MF if your model has several pieces or you print in more than one colour: every piece stays separate, named and coloured, in real millimetres. OBJ does the same for other 3D software. OBJ and 3MF need a free account.
Is it actually free?
Yes. Free to build, free to download, no card, no account to start. It's an independent project and the free version is the product. A free account raises your limits and unlocks OBJ and 3MF.
Is Printytron a text-to-CAD tool?
Yes, for 3D printing. It's CAD you talk to: you type, she builds a dimensioned solid the way a CAD package would, and you get print files: STL, OBJ, 3MF. What it skips is the learning curve. What it doesn't do is STEP export, so it isn't for sending parts to a machine shop.
Your printer's bored.
Somewhere in your house there's a thing that's broken, missing, or 3mm too short. Go measure it.
No account. No learning curve. No catch.