Staircase panelling

I'm looking to install some mdf panelling to my staircase, I believe it's called Wainscot?
Similar to the image below.

I'm confident of doing it myself as I have done lots of carpentry DIY.

The only bit I'm a bit unsure of is where the vertical pieces meet the rail sections (circled red)

I'm planning on routering the edges to create a nice moulded edge but wanted advice on how to ensure the corners are nice and tight between the verticals and rails?

Do I need to router the vertical edges first and mark on the rails where they meet so i do the 2 separately?
Or can I router the edge of the rails and somehow do a reverse mould on the top edge of the vertical pieces so it fits together?

Not sure if this is clear but basically wanted to know the best way to fit the routered pieces together?

Many thanks

J

If you are fixing directly to the wall it is generally better to saw the components, but them together then apply either bought-in or home made mouldings (beadings) cut on a mitre saw. Otherwise you have to get into either having a counter profile cutter for your profile cutter (expensive and not always available -requires a router table and a home-made sled/push block) or making a face frame double mitre joint (quite difficult)

JobAndKnock said:

If you are fixing directly to the wall it is generally better to saw the components, but them together then apply either bought-in or home made mouldings (beadings) cut on a mitre saw. Otherwise you have to get into either having a counter profile cutter for your profile cutter (expensive and not always available -requires a router table and a home-made sled/push block) or making a face frame double mitre joint (quite difficult)

Click to expand...

Thanks for that, yes it makes sense to use mouldings to create the edge.

The mitred/bevelled joint would be a bit too much so your suggestion will be the way to go I think.

Very much appreciated