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louvered octagon

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Forum topic by dburly posted 02-17-2017 12:35 AM 279 views 0 times favorited 7 replies Add to Favorites Watch
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dburly

2 posts in 41 days


02-17-2017 12:35 AM

I’m in the planning stage of a cupola, I wanted to have louvered octagons on each side
I have build a jig to cut the grooves in the straight side stiles with a router.
But for the angled stiles ?? Ill need some kind of compound miter cut.
Any ideas out there


7 replies so far

View Lazyman's profile

Lazyman

1098 posts in 964 days


#1 posted 02-17-2017 03:39 AM

How about making frames for the louvres that are square and make the vertical supports for the cupola cut so the sides form the angles? Does that make sense?

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

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jerryminer

632 posts in 1018 days


#2 posted 02-17-2017 06:03 AM

I think the easy way to handle this is to make a square frame with louvers and then cover with octagon trim, something like this:

You will have to work out flashing and siding details.

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jbay

1127 posts in 476 days


#3 posted 02-17-2017 12:10 PM

Make the Octagon. Put a dado blade in your table saw and tilt it to the angle you want for the louvers. Make your cuts in the Octagon and put in the louvers. They would have to be through cuts.
Just don’t raise the blade high enough to go all the way through the top of the frame.
Then trim the louvers flush with the sides. You could add another trim step around the octagon to hide the edges of the louvers. (Make it thicker than the octagon frame)

-- If anyone would like to see my Portfolio, PM me and I would be glad to send you the link.

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Lazyman

1098 posts in 964 days


#4 posted 02-17-2017 02:49 PM

Those are octagonal attic vents. This is an octagonal cupola:

Assuming that is what you are asking about, if you put the angles in the corners you can rip them on a table saw with blade tilted at 22.5 degrees. In fact if you make a square frame, you can cut the angles after the louvered frames are made and just join them at the corners to make the octagon.

BTW, here is a a handy octagon layout calculator that may be useful for computing the dimensions to match your needs.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

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dburly

2 posts in 41 days


#5 posted 02-17-2017 10:13 PM

I thank you all very much, just as I was ready to change design, you all come up with a way!
MY first post here, glad I picked your site
when I get done ill post a pic

THANK AGAIN DAN

View jbay's profile (online now)

jbay

1127 posts in 476 days


#6 posted 02-17-2017 11:42 PM



Those are octagonal attic vents. This is an octagonal cupola:

- Lazyman

”I wanted to have louvered octagons on each side

Just going by what he said and jerryminers drawings, thought that’s what he wanted.


I thank you all very much, just as I was ready to change design, you all come up with a way!
MY first post here, glad I picked your site
when I get done ill post a pic

THANK AGAIN DAN

- dburly

Looking forward to seeing the finished project,
Good Luck!

-- If anyone would like to see my Portfolio, PM me and I would be glad to send you the link.

View jbay's profile (online now)

jbay

1127 posts in 476 days


#7 posted 03-26-2017 06:58 PM

You still around or just a one and done?
Did you make it?

-- If anyone would like to see my Portfolio, PM me and I would be glad to send you the link.

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