About Curvemachine

CURVEmachine is a GPL‑licensed Blender add‑on developed by MACHIN3 to extend curve editing capabilities for POLY and NURBS splines. Version 1.4.2 supports Blender 4.2 LTS through 5.1. The core Blendulate tool lets users create, edit, and undo curve radii, arcs and non‑circular blends in a non‑destructive manner. Supplementary features include adding a single‑point poly curve at the cursor, Flick Symmetrize across the object origin or cursor, Knife cutting and splitting of splines, point merging across splines, sliding points along segments, reversing spline direction, adjusting thickness, extrusion and resolution, toggling cyclicity, and converting between POLY and NURBS types.

Features

• Blendulate tool to create, edit or undo curve radii, arcs and non-circular blends
• Add a single-point poly curve at the cursor’s location to quickly start extruding
• Flick Symmetrize a spline across its curve object’s origin or across the cursor
• Knife cut curve points into splines, or split splines into multiple
• Merge to the last selected point or the center of the selection, including across two splines
• Slide a curve point along its previous or next segment, and reverse a spline’s direction
• Adjust curve thickness, extrusion and resolution, toggle spline cyclicity, and convert POLY and NURBS splines

Best for

Blender artists who need precise, non‑destructive control over POLY and NURBS curve geometry, including radius and arc creation, spline conversion, and advanced editing tools.