Projecting side surface from a 3D object made by lofting in autocad into 2D

[Anonymous]

i have made a 3d object by lofting two circles in autocad:

PIC 1

PIC 2

JBBattery 

Now I want to project the newly made side surface (without the two original circles) into 2D so I can make it with sheet metal. By projecting the side surface to 2D I mean something similar as when you project the side surface of a cone into a part of a circle.

[schulz8NPAP]

Do you mean something like this?

Regards

Jochen

[Valentin_CAD]

@Anonymous ,

Welcome to the AutoCAD forum.

The attached was taken from: https://forums.autodesk.com/t5/autocad-forum/create-flat-cone/td-p/3066880

Based on comments from @ToanDN and @Anonymous .

One your case, because the circles are not centered, make sure to draw the Arc from the longer side (so you don't get a "Results in zero length geometry" error when using the Lengthen command).

[leeminardi]

I think what you are looking for would be termed " the development of an oblique (offset) cone. "  A quick google searched provided some manual techniques including this link.  Note that since the cone is not regular the radial distance from the top to bottom edge varies.