Stronger Spiral Vase.

Probably due to my impatience, I print quite a lot as 'spiral vase'. But they are not very strong so I decided to create a shape that would be quite strong in this configuration. This can be scaled to suit almost any application and still be strong enough. Pen holders and planters spring to mind so I left the brim in position on mine for added stability.

I found Slic3r to be very reliable with spiral vase, but not so with Cura, sorry guys.