Cove moldings

[sawdustmaker]

Hello
I have two crown molding pieces, A and B in the picture, that are supposed to meet in a corner as shown. How the heck should they be cut to fit together nicely? Is it even possible?

It would have been easy if they were two pieces in the ceiling, but they’re not

 

[maah]

It will be the same as if they meet at the ceiling, or am I completely wrong then? Look at the picture and imagine the wall on the left is the ceiling instead, then it becomes easy

 

[Plupp 282191]

It's just like the ceiling, imagine the wall is the ceiling instead

 

[sawdustmaker]

It will be just like in the ceiling, imagine that the wall is the ceiling instead

hmm. I have a few cm to spare so I can try to think that way. I must have cut it wrong when I tested earlier.

 

[Plupp 284245]

hmm. I have a few cm to spare so I can try to think that way. I must have cut wrong when I tested earlier.

It's not entirely impossible to cut wrong when it comes to coving directly

 

[maah]

It's not entirely impossible to cut wrong when it comes to concave molding directly

If you don't cut wrong at least once, you're inhuman

 

[Mazen]

Left wall = ceiling
Ceiling and right wall = wall
Place the crown molding with the ceiling side against the table on the saw and cut at 45°.