Man at B&Q wrote:
On Dec 19, 11:26 am, Peter wrote:
I'm trying to run a dado rail on a wall going up a set of stairs and
then along a landing.

I can't work out how to cut the joint where the horizontal (landing)
run meets the stair wall run. Am I right in my guess that you set the
internal angle on a sliding bevel, measure it with a protractor, and
then halve it to get the right saw cut on both pieces?


That's basically it. Just make sure you measure the angle for the
sawcut in the correct direction, depending which way you are holding
the workpiece. If in doubt, try it with scrap pieces first.

MBQ

Another way of looking at it is that halving the angle is the only way
the 2 cuts will be the same length.