Time to start the padded rail. I have some OSB laying around that is long enough.
I put some down on the top, and try to figure this out. I made a jig that is 8″ long to draw a line for the outside dimension.

The end piece has to be cut on the inside, first, so I can get the measurement for the outside referenced from the inside.

Then, cut the outside.

I made another jig for the inside mark. It is 4″.

Then, I cut the inside of it.

Sanded and rounded out.

I’m not sure yet, how to attache the three parts of this rail together. There isn’t much overhang to connect a splice.

Here I placed some chip trays, just to have a look.