SolveSpace – parametric 3d CAD tool

SolveSpace is a parametric 3d CAD tool.

The software runs under Linux, macOS, and Windows.

This is free and open source software.

Features include:

  • Sketch sections using:
    • lines, rectangles, datum lines and points.
    • circles, arcs of a circle, datum circles.
    • cubic Bezier segments, C2 interpolating splines.
    • text in a TrueType font, exportable as vectors.
    • trims to split lines and curves where they intersect.
    • tangent arcs, to fillet lines and curves.
    • line styles for stroke color, stroke width, fill color.
    • adjustable snap grid, for entities and text.
    • menu item, keyboard shortcut, or toolbar.
    • cut and paste, in plane and from workplane to workplane.
    • background image with specified scale, for ease of tracing.
    • 3Dconnexion six degree of freedom controllers.
  • Constraints and dimensions on:
    • distance (or line length), point-line distance, diameter.
    • projected distance, along a line or vector.
    • angle, curve-to-curve tangency, parallel, perpendicular.
    • horizontal, vertical.
    • equal length, equal angle, equal radius, length ratio.
    • line length equals arc length.
    • point on line, point on circle, point on point, point on face.
    • point at midpoint of line, line’s midpoint on plane.
    • points (or line) symmetric about line or plane.
    • 2d (projected into specified plane) and 3d geometry.
    • lengths in metric or inch units.
    • lengths entered as arithmetic expressions (32.6 + 5/25.4).
  • Build solid model with:
    • an extrude, lathe (solid of revolution) or helix from a sketch.
    • Boolean operations: union (add material), difference (remove material), intersection (leave only common material).
    • parametric step and repeat (pattern), rotating or translating.
    • operations performed on either meshes or NURBS surfaces.
  • Parametric and associative assembly:
    • link parts and drag them with six degrees of freedom.
    • link mirrored or with arbitrary scale.
    • place parts in assembly using constraints.
    • link surfaces, and merge them using Boolean operations.
    • link lines and curves, for 2d work or solid operations later.
    • changes in parts propagate automatically into assembly.
  • Analyze with:
    • measurements on a part or assembly (of point coordinates, line length, point-point distance, point-face distance, projected distance, face-face angle, point-line distance).
    • path traced by mechanism, exportable into a spreadsheet.
    • area of a plane sketch, volume of a solid shell.
    • degrees-of-freedom check to show unconstrained points in sketch.
    • interference check for assemblies.
    • “STL check” (vertex-to-vertex and not self-intersecting) for mesh.
  • Export:
    • 2d vector drawing as DXF, EPS, PDF, SVG, HPGL, STEP.
    • toolpath as G code.
    • as either piecewise linear segments or exact curves.
    • wireframe model, hidden-line removed model, vector shaded surfaces.
    • isometric view, orthogonal view, user-specified other view.
    • section of solid model.
    • with cutter radius compensation.
    • with adjustable canvas size.
    • 3d wireframe as DXF, STEP.
    • triangle mesh as STL, Wavefront OBJ.
    • NURBS surfaces as STEP.
    • shaded view as bitmap.

Support: GitHub Code Repository
Developer: SolveSpace contributors
License: GNU General Public License v3.0

SolveSpace in action

SolveSpace is written in C++. Learn C++ with our recommended free books and free tutorials.

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