HELP-Crown Moulding Expert Needed

[Smoothice]

Ok guys,

I'm hoping someone is a master crown moulding installer.

Here is my question.

I am trying to accomplish this:

[IMG][/IMG]

Basically instead of a standard 90* return this would be a 135* fade.

I don't know how in the world to figure this out besides lots of trial and error.

Any one have an idea how this is done?

Please be very discriptive and pictures would sure help.

Thanks in advance.

[Hexis]

If you have a large enough chop/miter saw you can just use a jog to prop the moulding on there and cut the angle directly.

[grEnAlEins]

Use a miter saw to cut two 67.5* angles and you should get a 135* angle.

[olinar]

nice choice of molding, ive got the same kind in my room.

itll be alot of trial and error as it looks like the edges of the moldings arent perpendicular to the ceiling. the have a 135* angle for the fade in and it looks to have like a 75-80 from the ceiling.

definitely take your time with crown molding, im not too pleased with my outcome but i dont want to start over either.

GOOD LUCK!

[cyberave68]

Looks like there are 2 totally different angles there....
I'll use the left one to try and explain what i see.

The first cut where the 2 moldings touch looks to be a plain 45* cut to start the corner...
the part going to the wall is the tricky one. You can measure the distance at the top that you are looking to achieve? Say 6" running length. and then measure the distance you get at the bottom "X". you will then have to match those 2 points together to give you the angle you should have. I would suggest a table top belt sander for this. the angle is prolly to steep for even a compound miter saw. I cant draw this up just yet but if i get my graffic's programs installed I'll get to it...

Did i explain that ok????

[Remington]

Crown moulding is definitely a nice touch, but I hope you're not planning on using it for the same situation as the picture you provided. The way the moulding is finished to accomodate the vent just draws attention to the vent itself, which, at least I feel, detracts from the aestheically pleasing affect that the moulding gives in the transition from the wall to the ceiling. But maybe it's just me.

Either way, good luck with your project; I love finish carpentry!

[bornl33t]

Crown molding will only fit together right if both pieces have the same angle. Basically you're looking at a 45 degree angle. grEnAlEins is technically right only I've never seen a miter saw with more then a 50 degree miter. So you take your 135 degree and strip 90 degree off the "long" piece from this picture leaving you with a 45 degree miter. You want to split it so you have the same cut on both sides which would be 22.5 degree. Of course this is with a crown fence. If you don't have a crown fence you'll have to lay it on it's back and then you'll need a compound miter saw. To get this right you'll need to find a chart and look up 135 degree on a 45 degree spring angle.
ermm... here ya go http://www.dewalt.com/us/articles/ar...odworking&ID=2

Crown molding is a real pain, it takes allot of time and it's always best to try it out first to make sure the fit is good. I don't know anyone that can do it without allot of thought. But trust me, you're still doing the basic stuff, when you start doing crown molding on vaulted ceilings then you are getting good!

[beam]

I don't think those are 45s. If they were, the face of the piece he is trying to make would be perpendicular to the wall and it's not.

[Coralis]

WARNING THE FOLLOWING PROBABLY WONT BE VERY HELPFUL!!:

What you need a is duct mechanic and drywall guy relocate that duct.

[Beemer]

WARNING THE FOLLOWING PROBABLY WONT BE VERY HELPFUL!!:

What you need a is duct mechanic and drywall guy relocate that duct.

Too funny. I was gonna say the same thing. That duct is to high.

[DevilMan]

Alright for those that DON'T know... Crown Moulding DOES NOT go from the Vertical to the Horizontal planes of a 90* angle at 45/135* angles!!!!!

CM actually comes farther DOWN the wall than across the ceiling. Trust me on this! I've put up my house full of it.

BUT!!! I would have to say that I think the better fix and better look would be to seal off the top of the vent and just vent from the bottom under the crown. Or slightly move the vent down the way.

To better answer the question you asked though.... Check here...

http://www.josephfusco.org/Articles/Crown_Moulding/crownscript.html

Best of luck and I hope it works out for ya!!!

DM

[bornl33t]

I don't think those are 45s. If they were, the face of the piece he is trying to make would be perpendicular to the wall and it's not.

Trust me, it's what I do...it's 1 - 45* bend. take a 2x4 cut it in half and cut one end of each piece at 22.5*. You'll be looking at the same thing in that picture, only from the top down.
The cut that meets the wall is one half of a 90* corner...so it's a 45* cut (with a fence) and then a 22.5*cut to make a wedge piece to "fade" into the wall. The longer run terminates at a 22.5* cut.


In all honesty though moving that vent is DEFIANTLY the way to go. Get a hole saw from Menard's and move the vent down just far enough to clear the crown molding. The vent cover and the crown molding will meet and no one will see the elongated hole behind the molding.

edit:
On second though, I assumed that it was a cold air return since it's on the wall, but it's got a lever to close it, so I'm not sure really. How old is this house? If it's not a Cold air return you may need to work with some tin to move the vent.

It's kinda interesting how some houses have returns high and some low. Heating and cooling guys changed their minds ever few years as to where the returns are more efficient. I could care less, but at least hide them so ya don't have a monster grill on your wall.

[bornl33t]

Alright for those that DON'T know... Crown Moulding DOES NOT go from the Vertical to the Horizontal planes of a 90* angle at 45/135* angles!!!!!

CM actually comes farther DOWN the wall than across the ceiling. Trust me on this! I've put up my house full of it.

BUT!!! I would have to say that I think the better fix and better look would be to seal off the top of the vent and just vent from the bottom under the crown. Or slightly move the vent down the way.

To better answer the question you asked though.... Check here...

http://www.josephfusco.org/Articles/Crown_Moulding/crownscript.html

Best of luck and I hope it works out for ya!!!

DM

Actually you are talking about molding with a 52*/38* spring angle. MOST molding these days has a 45*/45* spring angle just because it's that much easier to install.

It's imple trig really. We all know that the sum of angle inside any triangle is 180* since the wall is likly going to be a 90* that means the spring angle has to total 90* as well. 45+45 is 90* as is 52+38. I'm 99% sure I'm looking at the 45*/45* in his picture, but the camera angle may be playing tricks on me......



Did you ever get this figured out?

[Smoothice]

Crown moulding is definitely a nice touch, but I hope you're not planning on using it for the same situation as the picture you provided. The way the moulding is finished to accomodate the vent just draws attention to the vent itself, which, at least I feel, detracts from the aestheically pleasing affect that the moulding gives in the transition from the wall to the ceiling. But maybe it's just me.

Either way, good luck with your project; I love finish carpentry!

This is not my house. Just a house that I saw this fade cut in and said OMFG thats beautiful.

I won't be using the fade for this exact application. I will be using it at a dead end of a run. So instead of the standard 90* into the wall I will go with the 135* fade.

[Smoothice]

Guys. Check this out. I stumbled upon this page after searchin and searching.

http://www.installcrown.com/Crown_Molding_FAQ.html#TXTOBJ7D7901E12143530D5

All your posts were helpful but with out some pictures it just wasn't clicking. Hope this helps some of you as well.