Thoughts on how to create this spiral column?

I’ve never had to make something like this before. I tried making a 1’ dia cylinder, creating a spiral using the Helix command and subtracting the cylinder from the spiral. However, I can’t get the vertical span of the helix correct. I tried adjusting the pitch but it’s still not right. I’m thinking there is some ratio that I need to know as opposed to guess work.

EX_COLUMN.3dm (1.3 MB)

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Hello - that looks like it probably has four’pipes’, on a much looser helix. Use History on the Pipe, and History on ArrayPolar, then scale the helix curve vertically until it all looks correct.


Thanks Pascal. I didn’t realize it was 4 pipes. I assumed 1 like wrapping string ona a handle. I now got something that looks close. Still guessing but it will work. I suspect there is a ratio of some sort, but no idea where to start looking for it.

Turn history on before drawing anything. If your column does not look good, use history to fix it.