Determining Crown Cutting Angle With Sloped Ceiling

[Jim Conway]

I'm thinking of adding crown to a ceiling that's intentionally sloped at an as yet undetermined angle (it's not a drastic slope and might be something like 80 degrees). How can I determine what angle my compound miter saw needs to be set at and is it the bevel or miter setting that is used to determine the ceiling angle? Or if I choose to cope, perhaps it doesn't matter at all and standard angles apply....?

Thanks in advance!

[James "Cubby" Culbertson]

There are charts available or you could also go this route:

[mjb920]

Jim,

Your saw manual should have tables with angles. The manual from my DeWalt:

There's a bunch of other info if you Google "compound miter angles". Everything from charts to tables to scientific formulas.

The one thing they all seemed to say - practice on scrap pieces.

Jim

Jim C> I'm thinking of adding crown to a ceiling that's intentionally sloped

[HigThorp972]

[Jim Conway]

Jim, Table 1 in that DeWalt document looks to have the info I needed, and which my Ridgid manual didn't. Thanks very much!