The new handrails will be milled out of mahogany pieces of 28 x 52 mm, and a total of 6 pieces are needed. It is a rather cumbersome process, because you can not just make the cuts with a jigsaw - it will not look nice. That's why I made a template and milled them out with the router - it took a long time! I have rounded the edges with the router in a radius of 12.5 mm, so that the handrails become a little oval, which I think is nicest. Then they do not look like broomsticks.
I have decided that the handrails will be mounted from above, because I do not want a number of large screws in the ceiling - especially not because the planks in the roof have a different direction, so the screws would hit the joints in some places. So I need to make 32 stainless steel brackets of 40 x 52 x 3 mm to attach the handrails. The brackets will be milled up in the handrails, so there will only a small flap of approx. 10 mm visible on each side.