I have a PE-HD (polyethylene high density) cylindrical tank, and I have to make a cut on the side of the tank.
How can I flatten this cut-out, so I know the real size of this circle?
Thank you in advance.
You could model it as a sheetmetal part and then flatten it.
So you want the flattened shape to cut so that when it is rolled you have a perfect circle projected?
If so, I'd make a sheetmetal part with the correct radius of curvature, extrude cut the hole, then flatten the part to get the contour on the surface.
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