CAD for builders

Made for
3D printing

The enclosure for your next project. Brackets that fit just right. The little part you can't buy anywhere.
Design it, then make it real.

Explore the tools Native CAD / 3D printing / hardware

01 / NON-DESTRUCTIVE EDITING

Parametric design language.

Design as code. We use KCL to represent every object in the scene. Changes are reflected both ways, with zero latency.

02 / DIRECT MODELLING

Shape it by hand.

Sketch, extrude, push and pull faces, cut and fillet. Start with a rough idea, then refine the shape as you go, without having to travel back in time.

03 / READY FOR AI

AI-assistant friendly.

The KCL source is human-readable — and that means agent-readable. AI assitants can edit KCL or use a blender-like python API to design 3D objects.

Editable from every angle.

A bigger board.
A quick revision.

With fully parametric modelling, you give the enclosure another 10 mm, the lid grows with id, and the screw positions follow the corners. Wall thickness is preserved..

The KCL source is always in-sync with the editor. Work by hand, edit a dimension, or ask AI for a change; you can pick up the result in the viewport and keep working. Edits remain non-destructive. No coding required.

Download the parametric example ↓

PARAMETRIC DESIGNmm

Wall thickness2 mm

Screw positions1mm clearance

Built for the workbench

Serious CAD.
Easy to play with.

From a quick shape to a working assembly, with the control to keep refining it.

Native performance

Light. Lightning-fast.

A lightweight native app that puts your computer to work. Smooth navigation, responsive tools, and local modeling keep up with your hands.

Familiar tools

Hands-on modelling.

Sketch, extrude, push, pull, and fillet. Shape a housing as freely as a concept model, then dial in the dimensions for a precise fit.

AI, on your terms

Give the repetitive bits to AI.

“Make three versions for different board sizes.” Your AI assistant can edit the design through KCL and the CLI interface. Open its changes in the viewport, adjust a face yourself, or undo the edit.

Parts & assemblies

Design assemblies.

Create parts with shared dimensions and bring them together into an assembly, align them with mates, and check their fit. Reuse the same bracket wherever you need it.

Automatic connections

Automatic connectors.

Add screw holes, mating connectors, snap fit, tabs, hinges, and all sorts of connectors. Automatically generated across parts, with adjustable clearance and spacing.

Ready for making

From screen to the real world.

Check dimensions and sections before the next print. Export STL for your slicer or STEP for the machine shop, and bring reference parts into your design.

Find your fit

A small-builder budget.
A proper CAD tool kit.

€99/year for Tomasi Modeller. Here’s how the everyday workflow compares.

Core workflow, capabilities, and pricing
At a glance	Tomasi Modeller	Onshape ↗	Plasticity ↗	Tinkercad ↗	Shapr3D ↗
Price / plan	€99/year	US$1,500/yearStandard	US$175 onceIndie · Perpetual	Free	US$299/yearPro · Annual billing
Native desktop app	✅	❌	✅	❌	✅
Works offline	✅	❌	✅	❌	✅
Modelling workflow	Direct + parametric KCL	Feature history	Direct solids + surfacing	Primitives + booleans	Direct + feature history
Revise a finished part	Edit faces or KCL	Edit feature parameters	Direct face edit	Ungroup and resize shapes	Direct edit or history
Advanced part modelling	✅	✅	✅	❌	✅
Direct face editing	✅	✅	✅	❌	✅
Sketch constraints	✅	✅	❌	❌	✅
Parametric model changes	✅	✅	❌	❌	✅
Editable model source	Readable KCL	FeatureScript	—	—	—
AI edits through model source	✅	❌	❌	❌	❌
Reusable part definitions	✅	✅	❌	❌	❌
Parts and assemblies	Parts + mates	Part Studios + mates	Organised solids	Groups + Align	Bodies + Align
Section views	✅	✅	❌	❌	✅

Tomasi models are stored locally and can be edited offline. AI assistants may need an internet connection.

Competitor prices shown in their published USD; no currency conversion. Taxes and regional prices vary. Plasticity includes 12 months of updates. Onshape also has a free plan for public, non-commercial projects; Shapr3D Basic is free with two projects and basic-resolution mesh exports.

Sources checked 7 September 2026: pricing links above, Onshape feature workflow, Plasticity direct editing, Shapr3D direct and parametric modelling, Tinkercad tools.

Start with something you can change.

Download a simple enclosure body and flat lid in KCL.
Change the width from 80 to 90 mm; both parts update.

Starter geometry with shared dimensions. Add your own fasteners and cutouts.

Get the sample design