Sketch precisely
Build profiles with lines, rectangles, circles, arcs, splines, points, and typed dimensions. Sketch on datum planes or directly on a solid face.
New
STEP Export is now available
Parametric solids. Built in your browser.
Sketch, dimension, extrude, revolve, and refine solid B-Rep models in a focused CAD workspace—then continue with STEP or STL export.
No installation required. Desktop Chrome or Edge recommended.
Edge blend preview ready.
mm · Perspective
Current PAK Solid workspace · v32.19
Parametric B-Rep · STEP Import / Export
Modeling tools
A focused toolset for real part design.
PAK Solid keeps the full modeling path in one workspace, from the first constrained sketch to a B-Rep solid you can move into manufacturing or another CAD system.
Build parametric solids
Turn closed profiles into canonical solid B-Reps with Extruded Boss/Base, Revolved Boss/Base and Extruded Cut, with controlled direction and depth.
Refine the result
Finish parts with Fillet and Chamfer, combine bodies with Merge, and add Datum Planes while keeping every committed feature visible in the Part Navigator.
Export the model New
Save project files locally, export meshes to STL, or use the new STEP Export option for the next stage of your CAD workflow.
New
Interoperability update
Your model no longer ends in the browser.
OCCT STEP Export gives PAK Solid models a direct path into downstream CAD workflows. Build the solid in PAK Solid, export its B-Rep geometry, and continue where the job requires.
Try STEP Export
Export model
New
Available
Available
Local
Workflow
From blank plane to usable model.
The interface follows a familiar, deliberate CAD sequence. Each step stays visible in the Part Navigator so the model remains easy to understand.
Choose a plane
Start on XY, YZ, XZ, a custom datum plane, or a face of an existing solid.
Draw and dimension
Create the profile and type exact values while drawing or edit them afterward.
Create the solid
Extrude or cut the profile, preview direction and depth, then commit the feature.
Refine and export
Add blends or chamfers, then save the project or export STEP and STL files.
PAK Solid Beta
Open the workspace and build your first part.
Create an account to use PAK Solid in a desktop browser. Projects autosave locally so you can return to your work without installing a desktop application.
Keyboard and mouse recommended. Mobile modeling is not supported during beta.