Hi Gavin,

Here’s the stair in 3D. I’ve included the DXf file and the SketchUp file if you are using the free version of SketchUp.

Good luck with the design.

All the best,

Ness

Hi Gavin,

I can send you the files but quickly looking at your stair, it isn’t optimised and will not fit together correctly.

I would suggest you straighten the steps up the the turning, make the second left string curved, lengthen the strings past the steps and eventually add a landing step.

I attach an example.

All the best,

Ness