Dado rail angle cut

naughtysmurf

If I have a dado rail running up a stairwell at an angle of 35° & it then goes horizontal, what are the correct angles to cut the two pieces of rail to ensure a decent looking joint?

Thanks

Tokyo

If the rail goes from 35° to horizontal, then the angle the dado rail goes through is 180° - 35° or 145°. Therefore the cuts on each dado rail will be half of that, i.e. 72.5°

naughtysmurf

mike_ie wrote: »

If the rail goes from 35° to horizontal, then the angle the dado rail goes through is 180° - 35° or 145°. Therefore the cuts on each dado rail will be half of that, i.e. 72.5°

Thanks, the horizontal piece runs for a while on a landing area & then goes up again at 35°, so again I'm looking at two 72.5° cuts?

What's the easiest way to cut as I don't think your average mitre box has these angles, could possibly make something up myself

Joeseph Balls

naughtysmurf wrote: »

Thanks, the horizontal piece runs for a while on a landing area & then goes up again at 35°, so again I'm looking at two 72.5° cuts?

What's the easiest way to cut as I don't think your average mitre box has these angles, could possibly make something up myself

Easiest way is a chop saw with a fine blade.
Make something up with a sliding bevel?

Calahonda52

Joeseph Balls wrote: »

Easiest way is a chop saw with a fine blade.
Make something up with a sliding bevel?

on chop saw: 90-72.5 = 17.5, just turn the piece and make sure the cut is the right way
make a cardboard template with top and bottom marked on it, as well as front and back.
Vey easy to mess it up on a chop saw

cletus

Calahonda52 wrote: »

on chop saw: 90-72.5 = 17.5, just turn the piece and make sure the cut is the right way
make a cardboard template with top and bottom marked on it, as well as front and back.
Vey easy to mess it up on a chop saw

This.

Or, alternatively, buy enough dado so you can cut it wrong three times, curse at the saw, fling the whole lot in the corner, and make yourself a cup of tea