OpenShape3D
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Description
openshape3d is a direct-modeling CAD app built for touch. Sketch a profile,
pull it into a solid, and keep cutting, blending and patterning until the part
is done — no desktop, no subscription server, no file conversion dance.
Geometry is computed by OpenCASCADE, the same open-source B-rep kernel used in
professional CAD. Extrudes, primitives and booleans produce exact analytic
surfaces, so a cylinder stays a true cylinder instead of a faceted approximation.
SKETCHING
Sketch on a world plane, on any flat body face, or on an offset construction
plane pulled off a face
Line, rectangle, circle, arc, ellipse, polygon and text-as-outline tools
Endpoint, midpoint, centre, vertex and grid snapping — draw with Apple Pencil
Trim, move/rotate gizmo, construction geometry, and reusable symbols
A full 2D constraint solver: coincident, parallel, perpendicular, tangent,
equal, concentric, symmetric and more
Driving dimensions with inline arithmetic (type 25.4/2) pull geometry to value
The sketch tells you where it stands — fully defined, or how many degrees of
freedom remain
SOLIDS
Extrude a profile, or push and pull a face directly with automatic booleans:
pull to add material, push to cut
Revolve, sweep along a chained path, loft through sections, and helix
Fillet and chamfer edges with live preview and drag-to-size
Shell a body hollow, with optional open faces
Union, subtract and intersect between bodies, computed off the main thread
Split a body with a plane or a sketch profile
Linear and circular patterns with ghost previews
Move, scale, rotate, mirror, translate point-to-point and align
VIEWING
Orientation cube, six standard views, isometric and orthographic toggle
One finger orbits, two pan, pinch zooms — the camera never locks up
Section view that clips live against a plane, with a drag arrow and flip
Shaded, shaded without edges, wireframe with proper hidden-line removal,
and X-ray
Marquee select with window/crossing semantics, and Select Through to reach
a body buried behind others
Isolate to hide everything but the selection
MATERIALS AND REFERENCE
Material presets — steel, aluminium, brass, plastics, rubber, wood — plus
custom colour with metallic and roughness
Drop PNG or JPEG reference images onto any plane and trace over them
MEASURE
Face area, body volume and bounding box on selection
Two-point distance with X, Y and Z deltas over snap points
IMPORT AND EXPORT
Import STL and DXF
Export STL, OBJ, 3MF, GLB, USDZ and sketch DXF
Preview your model in AR with Quick Look