As an exercise, I’m trying to make a 3d version of a 2D pattern I’m working on in my kite workshop. It is a pretty simple thing in reality but I’m struggling to find a proper way to make it.
In the pic you can see the pattern, it is made of three pieces, a center plus two sides that go at 90º of the center. In Magenta, you can see the actual perimeter of the pieces, and in Cyan the stitch lines.
As you can see, the finished thing bends in two directions and in two places. First, the side folds to the shape of the center at point A, then the center folds over the side at point B.
Of course, if it is only one fold this is just a simple extrude but having both folds … any suggestions on how to attack the problem? Of course, the result should be as close as possible to the original pieces …
In case it helps, that is what I’m making:
And yes, I understand that it is not going to look inflated, just a sort of flat shape is what I’m looking for, maybe later I use grasshopper to try to inflate it
Hi,
solid extrude your ‘‘center’’, higher than the sides (you will have to adjust the height - as drawn above - of your center piece to the length of the base of a side). stand up (rotate along the base 90°) a side, rotate again 90° so it is against your extruded ‘‘center’’, wire cut, explode and remove the bits you don’t need (bottom and back).
HTH
Given that you can only sew the flat panels if you allow them to flex, or “inflate”, you are not going to get anything approaching an accurate model with any method that ignores that aspect. That gets me wondering what your purpose for the model is. Care to share?
No real use other than the problem itself. In software like blender, you can sort of stitch flat panels, and was wondering if there was a similar workflow in Rhino. Purely experimental.
Thanks!
