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drawing arches

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Forum topic by Stanley Coker posted 08-19-2011 03:29 AM 965 views 0 times favorited 3 replies Add to Favorites Watch
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Stanley Coker

208 posts in 1854 days


08-19-2011 03:29 AM

Topic tags/keywords: question

I think I remember seeing an article about drawing arches using straight pieces of wood. Does anyone know anything about this?

-- Stanley, North Georgia


3 replies so far

View BobTheFish's profile

BobTheFish

361 posts in 1211 days


#1 posted 08-19-2011 04:38 AM

Not sure, but looking at the link, it should work.

All arches are a segment of either a circle or an ellipse.

So as such, they’re either the set of all points equidistant from a central point, or all points equal to the sum of the distance from two other points (foci). Both can be created with two nails and a piece of twine, but it looks lie the two board method works basically the same way.

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Stanley Coker

208 posts in 1854 days


#2 posted 08-19-2011 11:45 AM

Thank you bentlyj that is exactly what I was looking for.

-- Stanley, North Georgia

View mailee's profile

mailee

44 posts in 1137 days


#3 posted 08-20-2011 08:26 PM

Whenever I need to make an arch shape I use a thin piece of flexible wood that I have in my shop. I just tap a couple of small nails in to the wood and flex the wood to the desired curve and then pencil it in.

-- www.alanwilley.co.uk

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