Spiral staircase Polygon tool. When pressing on the polygon tool a number of sides will come up in the bottom right corner. At this point without drawing anything select the amount of sides you want. For spiral staircases normally 16 is easy to work with. Set the radius to 1000mm. then draw a staight tline through the shape and create a segemnt.
Then erase the rest and create that one segment as a component. Then use the rotate tool, draw a line from the inner point to the bottom right point and begin to drag. Whilst dragging select control so you are able to copy the shape. After letting go type ‘x15’ in the keyboard and this will multiply the shape.
We then took the polygon and raised the whole thing by 160mm. (1) Then copy and controlled to copy the element on top on the first, then x15 to duplicate the copy. (2) Next we kept hold of the control tool and selected to the right up on each layer up. (3) Finally copied and controlled to duplicate just this selection and drag it to the side, creating your spiral stairs.(4)
(1)
(4) (2)
As it is a component stair cases are easily addable. (5)
(5)
(3)