When drawing, use the arrow keys to lock your control points to the Blue (vertical) axis to create 3D curves.
The ability to edit curves after drawing them saves immense time compared to redrawing arcs.
: Smooth curves that pass directly through the points you click, often used for creating organic shapes like ropes or architectural paths.
While SketchUp is excellent for sharp, geometric, and rectilinear architecture, its native tools struggle with complex curves. The native arc tool often falls short when you need to model flowing landscapes, ergonomic furniture, or complex product designs. Developed by the legendary SketchUp community developer Fredo6, the BZ Toolbar fixes this limitation by introducing advanced mathematical curves directly into your workflow. What is the SketchUp BZ Toolbar? sketchup bz toolbar
Because the BZ Toolbar is a legacy plugin (originally .RB files), the installation method differs slightly from the modern SketchUp Extension Warehouse (where you click "Install").
The BZ Toolbar (Bezier Spline) serves as a bridge, allowing for professional-grade organic modeling and precision curvature used in landscaping design and complex architectural forms. II. Core Functionalities of the BZ Toolbar Classic Bezier Curves:
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Access over a dozen specific curve types, from uniform splines to catenaries.
Draw a curve by clicking a sequence of control points. The curve passes through the first and last points, while the middle points act as "magnets" shaping the arc.
Master the SketchUp BZ Toolbar: The Ultimate Guide to Perfect Curves When drawing, use the arrow keys to lock
Creating curved garden paths, topography, and organic flower beds.
Before clicking your first point, look at the VCB (Value Control Box) in the bottom right corner. You can type a number followed by "s" (e.g., 30s ) to increase or decrease the segment count of your curve, balancing smoothness with model performance.
May 23, 2026
The SketchUp BZ Toolbar (Bezier Spline) is not just a luxury; it is a necessity for creating professional-grade, organic, and modern architectural models. By providing powerful, editable, and smooth curves, it bridges the gap between SketchUp’s linear nature and the fluid shapes of modern design. Download it today and take your modeling to the next level.