My design of an iPad stand has four splayed legs mated to a central post using mortise and tenon joinery. I cut a b-spline profile through one side of each leg to add a sense of organic fluidity to an otherwise angular structure.
The b-spline profile is created in the zx-plane and projected parallel to the y-axis to control the emphasis of linear movement along the height of the stand.
To actually create the contoured profile, I export a computer model into a program called Cut3D by Vectric Software. Cut3D creates the toolpaths and machine code required by a CNC router to shape the surface profile.
Cut3D happens to be a well featured program for creating 3-axis CNC toolpaths. It generates both rough and finish toolpaths, and displays those in animated form for verification.
Also output is an estimation of the time it will take to machine each leg.
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