Reply by Jim Finn

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Posted on Looking for Examples of Math in Wodworking

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Jim Finn

2648 posts in 2892 days

#1 posted 08-04-2016 10:59 AM

When I worked as a sheet metal worker I often needed to know how long a duct was required to offset an certain amount at 45°, using 45° ells. I multiplied the offset by the square root of 2. (1.41) to get this dimension. When making a round pipe I needed to know the total circumference of the wanted round duct in order to make it. C=pi d Just two examples in working with metal..

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