Parametric CAD that lands on its feet.
Purrametric is a feature-based 3D CAD that runs in your browser. Sketch with constraints, build parts feature by feature, mate them into assemblies and put them on a drawing – nothing to install.
Opens right in this tab. No account, no download.
Features
Everything from the first sketch to the finished drawing
Change a dimension and the whole part follows. That is the idea of parametric modelling, and Purrametric keeps to it throughout.
Feature-based parts
Extrude, revolve, cut, fillet, shell, draft and thread. Every step stays in the feature tree and can be edited later.
Constraint sketcher
Relations and dimensions drive the geometry. Fully Define Sketch finds what is still free, and 3D sketches go beyond the plane.
Assemblies with mates
Insert parts, mate them, then drag a component and watch it move exactly as its mates allow.
2D drawings
Drawing sheets with views and dimensions straight from the model, exported as PDF, SVG or DXF.
Its own geometry kernel
An exact NURBS boundary-representation kernel, written from scratch in Rust. No third-party geometry inside.
Runs in the browser
Open the page and start modelling. STEP and STL connect it to the rest of your toolchain.
Screenshots
A look inside
A familiar layout: feature tree on the left, the model in the middle, tools on top.
Curious? Go on, knock something off the table.
Purrametric starts with an empty part. The first sketch is one click away.