A stackable moss pole for climbing plants. Change the settings and the model renders again.

Moss pole
Number of poles: 3 for a triangle, 4 for a square, and so on
mm Everything fits inside a circle this wide
mm Overall height, heads included
mm Pole diameter at the base
mm Pole diameter at the top; below the base for a taper
° How far the poles turn around the centre between their ends, in steps of 360 / pole_count, so that each head comes back over a pole's place; 0 for straight poles
Struts and nodes
° Angle between the struts and the vertical, along their arc
mm Bow of each strut at mid-span, along the pole circle
mm Fillet radius where struts meet the poles; only keeps the struts clear of the ring above here
mm Extra pole radius at each strut joint and at the top
mm Length of each swelling
mm How far along a strut it widens into the poles, to meet them with their full diameter, like a fillet; 0 for none
mm How far the rounding between two struts where they meet at a pole reaches along each; 0 for none
Columns
Omit bottom
Struts to leave out at the bottom of each column, for columns 1 to 8. A column is the zigzag between two neighbouring poles; column 1 has the watering pipe, and the others follow anticlockwise seen from above
Omit top
Struts to leave out at the top of each column, for columns 1 to 8
Close columns
Close each column with a thin wall on the inside of its struts, from the ring to the shoulders, for columns 1 to 8
mm Thickness of the walls that close columns
Ring and bayonet
mm Fillet radius where the poles meet the ring
mm Thickness of the ring's lip, held between the shoulders and heads below
mm Play around the necks and heads in the keyholes
mm How much narrower than a neck the slot gets at the detent
Watering pipe
mm Inner diameter of the watering pipe
Test piece
Top ring