CADskalning

CADskalning is the process in computer-aided design of adjusting the size of objects, drawings, or assemblies to reflect real-world dimensions or to fit a drawing sheet. Scaling can be applied to whole drawings, individual components, or assemblies, and is distinct from changing the model's physical dimensions during design. In practice, scaling is controlled by a scale factor and may be uniform (same factor in all directions) or non-uniform (different factors along axes).

Common ways to express scale include ratio formats such as 1:100, 1:50, or decimal factors like 0.5x, depending on the software and region. A 1:100 scale means one unit in the drawing represents 100 units in reality. On paper drawings, scale is often used to fit large objects on standard sheets; in a 3D CAD workflow, scale may be applied to output only (viewport scale) while the model represents real dimensions.

In 2D drafting, CADskalning is typically implemented by setting a viewport or sheet scale; in 3D modeling, scaling can adjust model size for simulations or for printing. For manufacturing or construction drawings, dimensions are usually given at true size, with the scale shown for the drawing only; dimensions should not rely on the scaled representation.

Best practices include keeping units consistent, using a single scale per drawing or view, avoiding non-uniform scaling for mechanical parts, and verifying scales when exporting or printing. Many CAD applications support automatic scale updates when dimensions or layouts change.

Common software platforms used for CADskalning include AutoCAD, SolidWorks, Revit, Fusion 360, and other parametric or BIM tools.