>However, I think it could be done now, with a bit of rework of the
>sphere_sweep syntax. Just let the sphere_sweep take a four-dimensional
>spline as input data.

This could be used to make the tubing for a neon sign. Use the spline once
for the outer part of the tube, then again with smaller radius for the
inner part. Perhaps this could be done with a loop inside the sphere_sweep
object. Then use csg to make the hollow tube.

Rohan _e_ii

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