Est. 1998 — 27 years of woodworking knowledge
Cope Joint at 45 Degrees.
Richard A.Gillespie, Jr.
>I'm installing crown molding in a family room. There are two inside corners at 45 degrees. I know how to cope a inside corner when it is at approximately 90 degrees. My mind says the procedure is the same only you have to cut the mating piece at greater than 45 degrees. Any comments?
Re: Cope Joint at 45 Degrees.
Todd Stock
>Seems to me that the miter gets cut at 1/2 the wall's meeting angle, so a 90 degree angle gives a 45 degree miter, while 45 degree meeting angle would be 22.5 degrees. If in doubt, draw it out...
Acute or obtuse?
Cooper Suter
>If it's an acute inside angle, it won't be bad.
I suspect what you have is an obtuse angle of 90 deg. + 45 deg.
ie:135 deg.'s
It's correct to cut the coped piece @ one half the total angle to get the proper prfile to follow, the hard part it that your going to need to back cut at an extreme angle (45 degs. plus) to allow the profile of the 1st piece to go behind. The back cut doesn't have to be pretty, so it's much better to take extra out.
If your using a smaller profile soft wood, not that bad.
I trimmed a church once that had a butt-load of 135 deg corners, 7" base, 3" chair, and crown, all in red oak. Took some time.
Coop
Re: Cope Joint at 45 Degrees.
Bob Hutchins in central TX
>Glad to you posted that, Cooper. I was trying to imagine what a room with 45 degree (acute) corners would look like. Was gettin' closetphobia just thinkin' 'bout it.
BobH