3D View Overview
The 3D View shows a live preview of the part model built from the feature tree using CSG (Constructive Solid Geometry). The model updates automatically as you add, edit, or reorder features in the Sketch view.
Toolpaths for visible operations are rendered as colored lines over the stock block. Use the 3D View to inspect entry and exit points, path direction, depth layers, and overall toolpath coverage before cutting.
The CSG Model
The 3D model is computed using Constructive Solid Geometry — each feature in the tree is either added to or subtracted from the accumulated solid, in order from top to bottom. The result is a solid that represents the finished part geometry.
The model updates with a short debounce delay after changes to avoid unnecessary recomputation while you are actively editing. If the model appears stale, wait a moment for it to refresh.
Toolpath Visualization
Visible toolpaths are drawn in space over the model — one color per move type — so the vertical moves are easy to read: entry points, depth layers, stepdown progression, tab locations, and clamp clearance. The Show legend that filters those move types is the same in both views and is covered on the Toolpath Display page.
Open Features (Polylines)
Open sketch features — paths that do not close back on themselves — are rendered in the 3D view as screen-aligned polylines at the feature's Z Top. They sit on top of the CSG solid rather than contributing to it, so you can preview engrave paths, centerlines, and trim cutters in context without affecting the model.
Imported Models
Imported STL and OBJ meshes are displayed at their full triangle resolution. Each imported model has a light blue-gray outline in the sketch view, and the sketch-view legend includes Region and Imported model swatches so imported geometry is easy to distinguish from add features and subtract pockets.
See STL and OBJ Import for details on multi-body splitting and large-mesh handling.
Exporting Models
The 3D model exports to STL (and the 2D design to SVG) from the Export Model dialog in the top toolbar. Because these exports aren't specific to the 3D view, they're documented — together with printing — on the Export & Print page.