I am in the process of drawing a diagarm/learning Sketchup. I have need of a model for HVAC flex duct. Sketchup has a model but it is more a tutorial on drawing one. It references a ruby script to draw a spiral (helix) and from there build the duct. I downloaded the script but it is not showing up in the plugins menu. So... either
a)how can I run the script to draw my own helix?
b)extract just the completed flex duct model out of the tutorial model?
a)how can I run the script to draw my own helix?
b)extract just the completed flex duct model out of the tutorial model?

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