Cut stair railing at an angle?

[Alexander Åkesson]

I'm going to fix a handrail at the entrance door which will be made of pressure-treated wood 28x120. There are currently 3 metal posts (2 steps). I wonder if it matters how it's done at the joint where the two boards meet? Should the "upper" one be cut at an angle, the lower one, or both? Attaching a quick sketch.

 

[Bernieberg]

The sketch didn't come through, but if I interpret you correctly, it is a horizontal handrail that should meet a sloping one? In that case, you should miter both, half the angle difference on each, so they fit together. If you only bevel one of them, the cuts will be of different lengths.

 

[Alexander Åkesson]

The sketch didn't come through, but if I interpret you correctly, it's a horizontal handrail meeting an inclined one? If that's the case, you should bevel both, half the angle difference on each, for them to fit together. If you only cut one of them on the bias, the cuts will have different lengths.

You probably interpret correctly, sounds logical now that you say it. Thanks for the help!