Open, focused — built on bedrock
Mechanical CAD.
Nothing more.
CoreCAD is a curated mechanical CAD platform built on FreeCAD's proven foundation. It exists for engineers and makers who want a clear, stable, disciplined environment — without the noise.
Why CoreCAD?
FreeCAD is powerful and ambitious. CoreCAD takes a different approach — refining inward rather than expanding outward.
What CoreCAD is
- An open-source mechanical CAD platform
- A curated distribution built on FreeCAD
- Stability and predictability over rapid expansion
- A foundation for serious engineering work
What CoreCAD is not
- A broad, multi-domain CAD tool
- A platform for artistic or exploratory modelling
- A testbed for experimental design concepts
- A replacement for every FreeCAD use case
The core toolkit
A focused set of mechanical CAD workbenches — maintained, stable, and nothing extraneous.
Constraint-based sketching
Draw 2D profiles and apply geometric and dimensional constraints. Fully parametric — change a dimension and the model updates.
Feature-based solid modelling
Pad, Pocket, Revolution, Loft, Sweep, Fillet, Chamfer and more. Every feature is editable after the fact.
Multi-body design
Work with multiple bodies in a single document. Reference geometry across bodies directly — no workarounds required.
Assembly
Assemble parts with coincident, distance, angle and other constraints. Solved by the OndselSolver engine.
Technical drawings
Project 3D models to 2D sheets. Add dimensions, annotations, section views and title blocks.
Open format
Files stored in FreeCAD's open, documented format. Your work is never locked to a proprietary ecosystem.