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Old 03-16-2012, 06:56 PM
Join Date: Oct 2005
Location: Gilbert, AZ
Posts: 423
Default Re: Arch Forms for Oven Door - The Calculation?

Heck, after developing a spreadsheet to do the calculation, I used a string and pencil and multiple iterations to get my curve right! More fun the old way than using the spreadsheet.
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Old 03-16-2012, 07:00 PM
david s's Avatar
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Join Date: Mar 2007
Location: Townsville, Nth Queensland,Australia
Posts: 5,158
Default Re: Arch Forms for Oven Door - The Calculation?

Speaking of the Fibonacci series and phi, if you look at the ideal door height to dome height ratio of 62% it is 1/1.618 the Golden Ratio.
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Old 03-20-2012, 06:36 AM
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Join Date: Nov 2011
Location: Ireland
Posts: 358
Default Re: Arch Forms for Oven Door - The Calculation?

Just to add another method to get the radius into the mix. - here's a nice method needing just a compass and straight edge - no calculations - whch will work for any three points.
Draw a perpindicular line from the centre of Y, and another from its mirror on the right and where they intersect is the centre.
How to construct a circle through 3 points with compass and straightedge or ruler - Math Open Reference
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