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Forum topic by Pabs posted 09-10-2009 03:32 PM 1177 views 0 times favorited 12 replies Add to Favorites Watch
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Pabs

196 posts in 2921 days


09-10-2009 03:32 PM

hey all

for some reason I`m having a real hard time with a project

I built a lean to shed in back of my work shop

the roof on it is sloped at about 30 degrees.
my problem is the following, i`m putting a small crown molding under the soffit to match the existing structure.

so there are 3 pieces… one in the front and 1 on either side of the lean-to-shed
the piece in the front is just a straight piece… but the ones on the side have be cut going up 30 degrees and with the bevel as well… since it`s a crown molding .

I can’t figure out the angles to cut it at…if it went straight back it would be a breeze,..done that a million times…but the fact that it angles up is creating all sorts of headaches,,,

I can take a pic if the description was not clear enough…...hope someone out there has experience in these types of cuts

thanks

Pabs

-- Pabs


12 replies so far

View kolwdwrkr's profile

kolwdwrkr

2821 posts in 3057 days


#1 posted 09-10-2009 04:05 PM

Would it be easier to install the crown going up the 30 degree slope and then cope the straight piece into it? That way you don’t need to figure out how to cut the angle. Just a thought.

-- ~ Inspiring those who inspire me ~

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Pabs

196 posts in 2921 days


#2 posted 09-10-2009 04:12 PM

it`s an outside corner…so coping it would not work…

-- Pabs

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GMman

3902 posts in 3164 days


#3 posted 09-10-2009 04:24 PM

Look under Forums ,woodworking skill share page 2 or 3 Crown molding by Chuck Miller

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GMman

3902 posts in 3164 days


#4 posted 09-10-2009 04:25 PM

It’s under Tips page 3

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Pabs

196 posts in 2921 days


#5 posted 09-10-2009 04:39 PM

I`m either blind or stupid…or a bit of both but I can’t find TIPS anywhere!

-- Pabs

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GMman

3902 posts in 3164 days


#6 posted 09-10-2009 04:55 PM

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Sam Yerardi

244 posts in 3362 days


#7 posted 09-10-2009 05:38 PM

I haven’t tried it yet but you may want to check out this online calculator:

http://www.issi1.com/corwin/crown.html

-- Sam

View Don Newton's profile

Don Newton

714 posts in 3086 days


#8 posted 09-10-2009 06:48 PM

Hey Pabs….you did a good job explaining the problem. To simplify the situation, consider the piece of crown on a 30 degree slope. Plumb cut the end. You will se that the angled piece and the horizontal piece are 2 different profiles and I am not aware of any way to join them. I think you are aware that if the crown returned a few inches on the side, like at an eve, this situation can be avoided. When I have encountered this in the past I have made 2 different pieces of crown. This is a common situation when building pediment heads above doors.

-- Don, Pittsburgh

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Pabs

196 posts in 2921 days


#9 posted 09-10-2009 07:27 PM

Hey Don
yes I know what you mean about the profiles… but if both pieces are cut the same bevel and mitre then they should end up with matching profiles…
from what I’ve been seeing this is the same type of math that would be done for cathedral ceilings… when you go from your regular horizontal wall and go into the cathedral…

you mention having a return… not sure what you mean… I know what a return is…but would you have the side piece return a few inches away from the corner and then the main horizontal piece? that too would return a few inches from the corner?? meaning your corner would be bare correct? doesn’t look right in my head right now unless I`m not understanding you correctly

oh..checked the links… the first one (chuck miller) is not exactly what I`m looking for since he’s just doing a regular crown install…but all sorts of other great tips! :) I`ll be bookmarking that site , thanks!

-- Pabs

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Pabs

196 posts in 2921 days


#10 posted 09-10-2009 08:06 PM

found this site that might get me out of my jam
http://www.extremehowto.com/xh/article.asp?article_id=60354

-- Pabs

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kolwdwrkr

2821 posts in 3057 days


#11 posted 09-11-2009 05:47 AM

Hold your first piece up on the ceiling just like you would install it but let it run long. Mark the ceiling. Then hold the second piece up on the ceiling how it would be installed and again mark the ceiling. Where the lines in the crown intersect is where you would cut the crown. Hold the crown back up there and transfer the intersecting line from the ceiling to the crown. Do the same on the second piece. You should be able to cut to your marks and be good. If that makes sense.

-- ~ Inspiring those who inspire me ~

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Pabs

196 posts in 2921 days


#12 posted 09-11-2009 05:26 PM

makes good sense actually… almost too easy :)

I’ll try it tonight and post my success or failure :)

thanks

-- Pabs

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