Hello friends :) I used to know this, 35 years ago, but I seem unable to get my memory jogged or find the info I need, so I'm hoping someone can help. The diagram shows a truncated cone, could be a missile nose cone, part of a tip tank, or smoke stack on a wood burner old time loco, or anything similar.
The section is taken from a scale drawing, so the length (or height) is a known dimension, as are the radii and/or circumference of the end sections. I have no idea how to draw out on paper, using geometry, maths, formulae or any combination thereof, the piece 'in the flat' because I'm unable to fathom the connection between the shape of the arced lines on the flat piece and the sectional drawing, or how to calculate the angle of the edges where the piece would join. I have always made bits like this by trial and error.
I stress that I need to be able to physically draw this out on paper; if I can do that, I can do it in Photoshop. I have no programs at all for this kind of thing (other than my PC's calculator) and I can't add any programs as my 15 year old machine is a little stingy on the RAM....
Hoping someone can help :)
Plumdragon
The section is taken from a scale drawing, so the length (or height) is a known dimension, as are the radii and/or circumference of the end sections. I have no idea how to draw out on paper, using geometry, maths, formulae or any combination thereof, the piece 'in the flat' because I'm unable to fathom the connection between the shape of the arced lines on the flat piece and the sectional drawing, or how to calculate the angle of the edges where the piece would join. I have always made bits like this by trial and error.
I stress that I need to be able to physically draw this out on paper; if I can do that, I can do it in Photoshop. I have no programs at all for this kind of thing (other than my PC's calculator) and I can't add any programs as my 15 year old machine is a little stingy on the RAM....
Hoping someone can help :)
Plumdragon
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