Three Kinds 3d Spirals

Hello everybody!

This is a 3 3d spirals. This models design on the OpenSCAD.

First kind spiral done used function linear_extrude. This spiral is not nature spiral. This is spiral not harmonice body.
Second type spiral done with cosinus and sinus function. She is have beautiful body and look like monumental things.
And Third spirals have 3 spirals where all spiral made from over 3 spirals.

On the photo is two printed samples. Most interest spiral I can not printed, because have low quality printer.

Thanks for looking.