Spawn an object
into existence.

Kiln 3D is how AI agents make real things — safely, on any 3D printer.

Describe what you want. Kiln designs, prints, and monitors it — then branches, merges, and signs the version that works.

Bring your AI. We brought the rest.

Agents

ClaudeCodexCursorOpenClaw+ any MCP agent

Printers

Bambu LabCrealityPrusa LinkElegooMoonraker/KlipperOctoPrintDuet/RepRapFirmwareDirect USB+ more brands

Plugs into any agent. Operates any printer.

Tuned profiles for Creality, Bambu Lab, Elegoo, Prusa, Sovol, Voron, AnkerMake, Artillery, FlashForge, QIDI, RatRig & SparkX. See if yours is supported →

One thing today. Or a hundred this week.

Same printer. Same desk. One prompt each.

A white 3D-printed round coaster showing a relief portrait of a French bulldog and the name ASH along the bottom edge, held in a hand

One thing, today

a coaster with a photo of my dog Ash

Photo taken at lunch. Sentence sent. In hand by dinner.

Bambu Lab A1 Mini

A red 3D-printed circular ashtray held in a hand, with the Kiln mark debossed into the inside

Or a hundred, this week

an ashtray with our startup’s logo

Logo dropped in. Run queued. First of 100 by launch night.

Bambu Lab A1 Mini

The full run

From idea to a printed product in an afternoon. Manual included. Business

Multi-part prints ship with a printable PDF assembly manual — Bill of Materials, isometric step renders, pause-and-check verification gates.

Cover page of a Kiln-generated Desk Hook Kit assembly manual with labelled parts and scan-to-verify QR code
Cover page — labelled parts, QR verification, and build summary
Kiln-generated manual step page showing the hook arm snapping into the back plate with labelled parts, direction arrow, and instruction copy
Per-step page — part labels, mating arrow, and exact instruction copy
Final step of a Kiln-generated Desk Hook Kit manual with the current part highlighted and a warning check below the instruction
Final step — current part highlighted with a pause-and-check warning

A real PDF generated by Kiln from a simple 3-part desk hook kit — cover, mid-build, and final step from the same manual.

Git for 3D Printing Pro

Branch new ideas without losing the working version. Merge what prints best. Sign a release and prove later that nothing changed.

Works on three things you iterate on:

  • Your designs — the mesh itself
  • Your decorations — logos, textures, photo-emboss, brand assets
  • Your features — reusable parts: a hat for an action figure, a mounting bracket, chamfers, fillets, pockets, holes

On Pro and up. Local-first — branches, merges, and signed releases live on your machine. Pro adds cross-machine cloud sync; Business adds team pull requests and approval gates; Enterprise adds audit log export, SSO, and step-up authentication on production releases.

What Kiln does

The five capabilities that make Kiln, Kiln.

Text & Sketch to 3D

Describe what you want or sketch it. Kiln writes parametric OpenSCAD with a 14-component catalog (gears, threads, hinges, bearings) for precise parts, or sculpts free-form organic shapes directly for everything else — both free, no key required. Plug in your own key for external providers (Gemini Deep Think, Meshy, Tripo3D, Stability AI). Design DNA preserves the source for iteration.

Git for 3D Printing

Branch new ideas without losing the working version. Merge what prints best. Sign a release and prove later that nothing changed — and every file Kiln makes carries its own signed, publicly-checkable stamp at kiln3d.com/verify, with optional creator credit on Pro. Works on your designs, your decorations, and your mechanical features. Runs offline on free tier; Pro+ syncs across machines via Kiln’s cloud.

Print → Monitor → Recover

Full lifecycle: slice, validate safety, upload, print, control speed with natural language, monitor with camera vision, detect failures, diagnose root cause, auto-fix slicer settings, and retry. One conversation, start to finish.

Safety at Every Step

51 named per-printer safety profiles with temperature and speed limits. G-code validation before every send. Preflight checks, emergency stop, heater watchdog, G-code interception. Agents can’t bypass safety.

903 MCP Capabilities, One Protocol

903 MCP capabilities and 235 CLI commands with --json output. Any MCP-compatible agent gets full access. Open source, AGPL-3.0 licensed, plugin-extensible.

More capabilities

See more of what Kiln does — printability engine, multi-part assembly, autonomous failure recovery, mid-print modification, fleet & fulfillment, and more.

How it works

From idea to physical object — then branch, merge, and print a better one.

  1. Idea
  2. Design
  3. Generate
  4. Validate
  5. Decorate
  6. Slice
  7. Print
  8. Monitor
  9. Iterate

Every step is an MCP tool. Agents compose the pipeline. Humans can run any step from the CLI. Every print outcome feeds the next iteration.

Before and after Kiln

One tool instead of a dozen. One conversation instead of a dozen tabs.

CapabilityWithout KilnWith Kiln
Create a 3D objectLearn Fusion 360, Tinkercad, or OnShape — or browse model sites manuallyDescribe it or sketch it — Kiln generates, validates, and prepares it
Validate before printingSlicer warnings + experience + wasted filament7-dimension scoring (0–100), auto-repair, mesh fix, auto-scale for AI models
Add decorationsBlender or Photoshop, then re-import and hope it printsQR codes, photos, logos, text — emboss or deboss with one command
Add surface texturesUV mapping skills + texture software — not practical for most usersTiger stripe, marble, snakeskin, wood grain, carbon fiber, honeycomb, etc. — applied directly to any modelpro
Multicolor printingManually configure AMS slots and paint color regions in your slicerAutomatic color segmentation, AMS slot mapping, and multi-gcode merging
Product templatesDesign every coaster, keychain, and ornament from scratchOne command: "make me a coaster" — with QR codes, logos, and textures built inpro
Control your printerOctoPrint, Creality Print, Prusa Connect — a different tool for every brandOne interface for every supported backend — same commands, any printer
Monitor for failuresYour printer’s camera or an add-on webcam — no AI analysis, no auto-recoveryAI vision analysis across any printer with automatic failure recovery
Resume a cancelled printStart over — the partial object is wastedResume from the exact layer it stopped, no filament wastedpro
Mid-print modificationsCancel, redesign in CAD, re-slice, reprint from scratchDecorate, add features, or swap material on a live print — with atomic revertpro
Manage a fleetOne dashboard per brand, no cross-brand routing or learningUnified fleet with smart job routing, failure rerouting, and cross-printer learningpro
Learn from past printsStart fresh every time — your experience stays in your headKiln learns what worked — same material + printer = better settings next timepro
Trust your printer’s calibrationGeneric slicer defaults; your tuned values stay tribal knowledge, and every print’s calibration starts from zeroReads your slicer profiles AND keeps learning from every print — per-printer offsets refine over time with full provenancepro
Safety beyond firmwareFirmware basics (thermal runaway, current limits)Per-printer profiles + G-code validation + preflight checks + real-time interception
Outsource to prosVisit Craftcloud or other services, compare quotes yourselfRoute to 150+ 3rd-party services via Craftcloud directly from your workflow
Version-control your designsRename files v1, v2, v2-final, v2-final-FINAL — lose track of which printed rightBranch, merge, cherry-pick, A/B across designs / decorations / features — three-way semantic merge at the mesh levelpro
Prove which version shippedEmail the STL and trust nobody edited itSign a version the way you’d sign a contract — anyone can verify later that nothing changed after you signed itpro
Sync designs across devicesDropbox and hope nothing driftsPush and pull between your machines through Kiln’s cloud — private to your accountpro
Ship an assembly kitWrite a 30-page PDF in Word, photograph each step, hire a translatorMulti-part prints ship with a printable PDF — BOM, isometric step renders, multilingual sections, "what changed" diffs for revisionspro
Design for your machineGeneric models sized for someone else’s printerDesigns factor in your build volume, materials, and temperature limits automatically
Keep filament dryGuess, or babysit a dryer boxRun the AMS dryer from chat (Bambu), check humidity, and get a heads-up before moisture-prone filament prints
Catch a worn nozzleQuality fades print after print — you blame the filamentWear tracked across every print, with a warning before a job pushes the nozzle past its limitpro
Print something too bigFind out when the part hits the gantry — or the nozzle crashesStopped before it starts, rotated to fit when possible — Pro shows the cleanest split or the material to switch to
Know what a part can surviveForum guesswork about gasoline, dishwashers, and summer heatHonest exposure answers — warnings always free; everyday go-aheads on Business, safety-critical on Enterprisebusiness
Glue two printed partsA drawer of half-used glues and hopeThe right adhesive for your two materials — surface prep and cure schedule, cited to datasheetspro
Let AI run the whole thingNot possibleFull pipeline via MCP — any AI agent, any printer, start to finish

Let's build.

Open source, AGPL-3.0 licensed, free for local printing forever.