@pbacot said: @chrisjk said: , then extruded that line and thickened the extrusion. How? Peter Yes, sorry - I got interrupted and neglected to come back and finish the post properly. I used extrudeline.rb to extrude the curve and then JPP to thicken it. I could probably have used follow-me with a section of the stair rail and this would be needed for a shaped banister. (Of course, I also first scaled the image using the dimensions on the plan).