From idea to printable part

Make the part you have in mind.

Describe what you need. TirbbyCAD builds an editable CAD model you can size, inspect and export for your 3D printer.

Start designingSee how it works

Write your brief first. Sign in when you're ready to generate.

Threaded jar
Real CAD model

Example brief

“A screw-top jar with a matching lid, 54 mm wide, with a printable thread that closes properly.”

Outer size

Ø 54 × 56 mm

Built with TirbbyCAD's geometry engine
STL export

01Start from a plain-language brief

02Change dimensions without starting over

03Export real geometry as STL

How it works

A practical path from prompt to print.

Start with the job the part needs to do. Keep control of its measurements and the final file.

01

Describe the need

Tell TirbbyCAD what the part should do, its size, and what it must connect to.

02

Refine the model

Inspect it in 3D, change dimensions with controls, and ask for adjustments in the project chat.

03

Check and export

Review printability feedback, then export STL files to use in your slicer.

Inside the workspace

Built to be changed. Built to be made.

A useful first model is just the beginning. Tune the part, review the checks and take a real 3D file to your slicer.

Start designing
Example project detailsThreaded jar

Editable parameters

Inner width70 mm
Inner depth55 mm
Inner height25 mm

These are the dimensions used to build the enclosure shown above.

What the editor supports

Adjustable dimensions

Change the parameters in the editor without generating from scratch each time.

Printability feedback

See checks for common geometry and printing issues before you export.

Real 3D output

View the parts, choose a material profile, and export STL for printing.

Examples

From a sentence to a part you can print.

Real requests people make every day: brackets, enclosures, adapters and holders. Open one to start from the same brief.

  • Wall mount · 2 screw holes

    E27 wall lamp bracket

    “A wall mount for an E27 lamp holder with two screw holes for the wall.”

    Try this brief

  • Enclosure · lid · USB-C

    ESP32 enclosure

    “An enclosure for an ESP32 development board with a screw-on lid and a USB-C opening at the front.”

    Try this brief

  • Adapter · exact diameters

    32 to 25 mm tube adapter

    “An adapter from a 32 mm tube to a 25 mm tube, 40 mm long, with a 2 mm wall.”

    Try this brief

  • Holder · 10 slots

    Drill bit holder

    “A desk holder for 10 drill bits from 3 to 10 mm, with a flat base.”

    Try this brief

  • Case · ventilation · ports

    Raspberry Pi 5 case

    “A case for a Raspberry Pi 5 with ventilation slots and openings for the USB, HDMI and power ports.”

    Try this brief

  • Threads · printable clearance

    M8 bolt and nut

    “A threaded M8 bolt, 30 mm long, with a matching hex nut that prints with clearance.”

    Try this brief

Pricing

Pick a plan. Print what you need.

Every plan builds real, checked CAD models. Paid plans add AI credits, unlimited saved projects and reference photos.

Save 17%

  • Maker

    For makers who print every week.

    $6/ month

    Billed $72 yearly

    • 30 AI credits per month
    • Unlimited saved projects
    • STL and 3MF export with supports
    • Reference photos
    • Upload SVG outlines and logos
    Get Maker

  • Pro

    For heavy use and small print shops.

    $24/ month

    Billed $288 yearly

    • 1 AI credit per month
    • Unlimited saved projects
    • STL and 3MF export with supports
    • Reference photos
    • Upload SVG outlines and logos
    • Deeper AI reasoning
    Get Pro

An agent turn uses 1 credit, or 2 with reference photos. Failed turns caused by our service are refunded. Credits renew on the 1st of each month (UTC) and do not carry over.

How credits and plans work

FAQ

Questions before you print.

Do I need CAD experience to use TirbbyCAD?

No. You describe the part in plain language, then adjust its dimensions with sliders and ask for changes in the design chat. There is no modeling to learn.

What files can I export, and which 3D printers work?

You export STL and 3MF files that any slicer opens. TirbbyCAD is built for FDM printers and checks wall thickness, overhangs and other common printing issues.

Is the model really editable, or just a mesh?

It is a parametric CAD model with exact measurements. Changing a dimension rebuilds the part from the same recipe instead of stretching a mesh.

What do the printability checks cover?

They verify that the part is a single closed solid, that walls and features are thick enough for your material profile, and that the parts of an assembly do not collide. They are automated checks, not an engineering review.

Who owns the designs I create?

You do. Your designs and exported files belong to you. Read the Terms of Service for the details.

What is sent to the AI provider?

Your description, the current design and any reference photos you attach are sent to the AI provider to propose a design. The AI never generates geometry directly: it returns a specification that our own engine builds and validates. The Privacy Policy explains what is stored.

Is there a free plan?

When the free plan is enabled you can start for free with a monthly allowance of AI credits. Paid plans add more credits, unlimited saved designs and reference photos. See the pricing section for the current plans.

Your next project starts here

The missing part starts with a sentence.

Tell TirbbyCAD what you need, then shape the details in the editor.

Start designing