Turn the model over
Ask for a part and it opens as a 3D model in the conversation. Drag to rotate, switch views, and tip it over to check the bottom before anything prints.
Kiln in Claude Duet
Message Claude Duet. Get a real object.
Kiln gives Claude Duet what it needs to design a part, check it will print, and price it printed and shipped. Add your printer and Duet can make it there. You approve every print.
It opens right in the conversation
Kiln shows its work as panels inside Claude Duet, so you see what it made before anything prints.
A check before it prints
Kiln checks the part will print and fits your printer, and flags what is likely to go wrong. Claude Duet ran that check on the organizer above without being asked.
See what it costs to have made
No printer? Ask for a price, and a card opens with what it costs to have the part printed and shipped to you.
Tested in Claude Duet on the web. Where a panel can’t show, Kiln hands back a link that opens the same 3D view in your browser. Starting a print needs Kiln installed on the computer next to your printer.
From a real Claude Duet chat
Design a desk organizer shaped like a little city skyline: towers of different heights for pens and markers, a slot that holds my phone upright, and a low tray for sticky notes. Show it to me in 3D.
The organizer opens in 3D in the chat
Your skyline desk organizer is ready to look at in 3D. It’s one 200 x 120 mm piece, 136 mm tall at the antenna. It has eight pen towers, a phone slot leaning back 18 degrees with a cable notch, and an 80 mm sticky note tray.
Happy with it, or want changes?
What Kiln adds
Claude Duet can imagine it. Kiln makes it real.
The same job both ways, from a sentence to an object in your hands.
| Step | Claude Duet on its own | Claude Duet with Kiln |
|---|---|---|
| Make it | Writes CAD code. Seeing the shape takes a CAD program on your computer. | Kiln builds the model and opens it in 3D right in the chat. |
| Check it | A problem shows up in the slicer, or partway through the print. | Kiln checks overhangs, thin walls, warping risk, and whether it fits your printer, before anything prints. |
| Change it | Ask again and get new code. Keeping track of which version was better is on you. | Ask for a change in the same chat, and Kiln keeps every try tied to what you first asked for. Save it to your free Kiln account and you get version control: every version kept, and a branch for the risky idea. Pro does it on every design and draws what changed on the part. |
| Slice it | Export the file, open your slicer, and pick the settings. | Kiln slices it in the slicer you already have: PrusaSlicer, OrcaSlicer, or Bambu Studio.Kiln on your computer |
| Print it | Send the file to your printer yourself. | Claude Duet sends it to your printer, and it starts only after you say yes.Kiln on your computer |
| Watch it | Check on it in the printer’s own app. | Kiln watches every print it starts and stops it if a heater fails. Watch it live on kiln3d.com/monitor, with the camera, progress, and pause and stop, or ask Claude Duet how it’s going.Kiln on your computer |
| No printer? | Find a print shop, upload the file, and wait for a quote. | Ask for a price, and Kiln shows what it costs printed and shipped to you. |
| More printers | You run each one yourself. | Business runs several at once and picks the printer for each job. Free and Pro drive one at a time. |
Steps marked “Kiln on your computer” need Kiln installed on the computer next to your printer. The camera shows when your printer has one. A print can still fail, with Kiln or without it; Kiln catches what it can see before the print starts, and asks before it uses your plastic.
Set it up
Two minutes in Claude. Nothing to install until you want your own printer in the loop.
Add Kiln to Claude
Claude Duet uses the connectors on your Claude account, so Kiln goes in once, in Claude. Open the link below and confirm, or add a custom connector by hand with Kiln’s address.
https://api.kiln3d.com/mcpSign in to Kiln
Claude opens Kiln’s sign-in when you add it. Sign in or make a free account. How the connector works.
Message Claude Duet
Kiln is already there. Ask for a part in plain words. Kiln designs it, checks it will print, and opens it in 3D right in the conversation. Getting into Claude Duet.
To print, add your printer
Install Kiln on the computer next to your printer. Claude Duet can then send a print to it, and you approve every one. Install Kiln. See the printers Kiln works with.
Before it prints, Kiln asks you
A print uses real plastic on a real machine, so Claude Duet can’t start one alone. Kiln shows you the model, then waits for your yes before the printer starts. You can say yes to one printer for a while so it stops asking, and end that whenever you like.
Questions
Can Claude Duet 3D print?
Yes, with Kiln. Describe a part in Claude Duet; Kiln designs it, checks it will print, and opens it as a 3D model right in the conversation. To print, install Kiln on the computer next to your printer; Claude Duet then sends the print there and you approve it. Tested in Claude Duet on the web.
Can Claude Duet make 3D models?
Yes. With Kiln connected, Claude Duet turns a plain description into a real 3D model you can turn over, measure and change in the same chat, then print or download. No CAD skills needed.
What does Kiln add to Claude Duet?
Claude Duet can write the code for a 3D model. Kiln builds it, opens it in 3D right in the chat, checks it will print (overhangs, thin walls, warping, and whether it fits your printer), slices it in your own slicer, and sends it to your printer after you say yes.
Which model works best with Kiln in Claude Duet?
There’s nothing to pick. Claude Duet runs on Claude Opus 5.5 and decides how much effort each job needs. Kiln does the checking and the printing; the model does the thinking, so a stronger model means better designs and fewer retries.
How do I connect Claude Duet to my 3D printer?
Add Kiln in Claude by its address, https://api.kiln3d.com/mcp, and sign in; Claude Duet picks it up from your Claude account. Nothing to install. The setup steps on this page take a few minutes.
Do I add Kiln inside Claude Duet?
No. Claude Duet uses the connectors on your Claude account, so once Kiln is added in Claude, it is in Duet from your first message.
Who can use Claude Duet?
Anthropic offers Claude Duet as a research preview on its Pro, Max and Ultra plans in the US, through a waitlist. Anthropic’s Claude Duet help page has the current details.
Do I need a 3D printer?
No. Claude Duet can design a part, check it will print, and show you what it costs to have it printed and shipped. You need a printer, or someone else’s, to make it.
Will it print without asking me?
No. Kiln shows you the model, then waits for your yes before every print. You can say yes for a while so it stops asking on that printer, and end that whenever you like. Auto-print is off unless you turn it on.
Which printers does it work with?
Bambu Lab, Creality, Prusa, Elegoo, and most Klipper and OctoPrint machines. The full list is on the supported printers page.
Is Kiln made by Anthropic?
No. Kiln is independent, open-source software you can use from Claude Duet. It is not affiliated with or endorsed by Anthropic.
Add Kiln to Claude Duet →Using ChatGPT? →Using Claude? →Using Codex? →Using Cursor? →Using Gemini? →Using Grok? →Using Hermes Agent? →Using OpenClaw? →
Kiln is independent, open-source software. It is not affiliated with or endorsed by Anthropic.