Hi all,

I'm currently designing a staircase for a client, and i need to be able to create the swept path shown below in sheet metal. I have attached my skeleton model that has the basic structure to it.

here's the image of what it will roughly look like:

and below is where I'm currently at with the design.

It must follow the 2 arcs shown below in plan view and be at the heights set by 'Stair Rail Profile Sketch 1' to 'Stair Rail Profile Sketch 4' - this is 100mm off each step leading edge.

The make up will be a top panel, and 2 side panels.

I've tried numerous methods, splines, arcs, projected curves etc but I can't seem to get the profiles to match to create a nice curve.

Appreciate and help or advice to get me out of a bind.

Thanks

Duncan