CURVEmachine is an add-on that expands Blender's poly curve editing capabilities. It provides a set of operators designed to handle curve radii, arcs, and non-circular blends in a non-destructive workflow. The core of the add-on is the Blendulate tool, which allows users to generate, modify, or merge curve radii and blends back into single points. Additional tools facilitate common curve operations, such as adding single-point curves at the cursor, sliding points along segments, and knife-cutting points directly into splines. The toolset also includes utilities for symmetrizing splines across an object origin or the 3D cursor, merging points across multiple splines, and shuffling spline gaps. Users can adjust curve thickness, extrusion, and resolution, interpolate thickness and tilt, connect separate splines, and convert between poly and NURBS curve types.