MATERIALIZR

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B-REP · OPEN-SOURCE CAD

Designed to exact dimensions.

Real B-rep solids on the OpenCASCADE kernel — constraint sketches, validated threads, projection onto curved faces. The middle ground between dead-simple and fully-featured — on desktop, iPad and Android tablets, with a layout that fits each.

Download latest release ★ View on GitHub

v1.5.0 · GPLv3 · Linux · macOS · Windows · iOS · Android

Materializr's touch layout on a tablet — a coffee mug with the tool rail and viewcube

IM-TOUCH LAYOUT

BUILT FOR TABLETS

92.00 mm

Real B-rep solids

not meshes — exact geometry

Editable history

every step, even after reload

STEP · STL · DXF · 3MF

nine exchange formats — your whole pipeline

Validated operations

refuses bad geometry, never corrupts

What it does

From first line to printed part.

01 · Sketch

Draw with inference, lock with constraints.

Lines, arcs, splines and polygons with SketchUp-style snapping — endpoints, midpoints, perpendicular, tangent, 15° increments. Add dimensions and constraints only when you want them. Drop in a reference image and model against it.

inference snapping text as outlines SVG import reference images

Sketch mode — a constrained rectangle with tangent and dimension input

02 · Model

Pull a sketch into a solid, then keep editing.

Start from a primitive or push/pull a sketch — then extrude, lathe a profile, revolve a body like a fan or hinge, loft (straight, multi-section or steered by guide curves), fill a boundary, run booleans, fillet & chamfer, shell, mirror, patterns, and separate a body's disconnected solids. Edit faces directly — taper a draft, scale a wing tip, twist a face, dial a hole to an exact diameter.

primitives lathe · revolve guided loft fillet · chamfer direct face editing

03 · Detail

Real threads. Logos wrapped around curves.

Validated internal and external screw threads with sensible coarse defaults. Projection engraves or embosses any sketch onto a flat — or curved — face. Wrap a logo around a cylinder in a few clicks.

screw threads projection · emboss section view

04 · Exchange

Plays nicely with your whole pipeline.

STEP, IGES and BREP in and out for lossless CAD exchange, and STL both ways to work from or hand off a mesh. Export glTF, OBJ and 3MF for printing and rendering (Z-up corrected). Sketches move both directions as SVG and DXF at 1:1 mm — straight to laser cutters, CNC and vinyl — and you can trace over an imported photo underlay. Unfold a body into a flat cut pattern as a 1:1 SVG or a tiled, printable PDF. The native .mzr format stores bodies, sketches and the full editable history.

STEP · IGES · BREP STL in / out glTF · OBJ · 3MF SVG · DXF · 1:1 mm unfold → SVG / PDF history preserved

Right-click body menu with Export Body to STL highlighted

Edit your history — not a one-way bake.

Every action is a history step you can revisit, even after closing and reopening the project. A few heavy finishing steps — like threading — are applied last, but the rest of your model stays open to rework. Plus construction planes & axes, Section View, and auto-saved version snapshots.

What it is

Enough genuine parametric solid modeling to make real parts — without a steep learning curve, a subscription, or an account. If beginner tools feel limiting and pro tools feel heavy, that gap is exactly what Materializr is for.

What it isn't

It isn't trying to replace SolidWorks, Fusion 360 or FreeCAD. It's young software built quickly, so expect rough edges — but operations validate their results and refuse rather than corrupt your model. Save often, and send bug reports.