Elliptical

 
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Old 03-18-2008, 05:46 PM   #1
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Elliptical


Hi,
I'm putting vinyl on a house that we built an addition on. It has an andersen french door with an elliptical transom over it. We're using 2.5" J around all the windows so I need to duplicate this look over the transom.
My plan is to cut a trim piece out of a sheet of azek. Today I made a template out of cardboard, copied it to plywood in hopes of using it as a router jig for the azek.
I made the plywood template about 5 inches wide so I could take it up there scribe it and fine tune it. Problem is the more I mess with it the worse it fits.
This transom has more than one radius, but does anyone know of a method for laying it out, without trying to scribe it? I know how to draw a radius with a framing square, but like I said it has more than one radius, and is six feet wide. I can't do that with the framing square.

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Old 03-18-2008, 06:16 PM   #2
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Re: Elliptical


http://www.uwgb.edu/DutchS/MATHALGO/Ellipses.HTM
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Old 03-18-2008, 06:41 PM   #3
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Re: Elliptical


yup I think that'll do it!
Thank you
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Old 03-18-2008, 10:28 PM   #4
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Re: Elliptical


Azek is bendable w/ heat. The supply house you purchased from may be able to hook you up w/ the Azek rep who should hopefully get you hooked up. Are you using all smooth surface and not grained surfaces? Let us know how it turns out
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Old 03-19-2008, 01:35 AM   #5
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Re: Elliptical


http://www.josephfusco.org/Tips/tip0018.html

I'm not sure if this is what you're asking for, but here it is anyway. Joe's site has a lot of great information buried in it.
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