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Discussion Starter · #1 ·
what's the trick to mitering together molding that wraps the corner at the eave/rake intersection on a roof?

it seems impossible to me but i see it often. is the trick just a bunch of caulk and hope no one looks too closely?
 

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pics please. There are a lot of difference configurations for that intersection. Need to get a better idea of what you are doing
 

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Discussion Starter · #5 · (Edited)
right.
so two pieces of stock molding the same size cannot be mitered together at the rake/horizontal transition, right?
as the cuts would result in different lengths.

or am i still confused?
 

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A lot of people have trouble with this miter. To understand it take a board and cut it in half. Take one piece and cut the plumb angle on it. In other words hold it at the angle of the roof and cut for plumb.

Now take the rake piece and hold it at the roof pitch and place the square cut piece next to it. You will notice that the lengths of the cuts are different, ergo the molding sizes must be different. This is illustrated in "Circular Work in Carpentry and Joinery" by George Collins.
 
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