How do i unroll pipes?

Hi, i am attempting to unroll pipes but because it is curvy and round, I can't unroll normally in rhino.

Because of the s shape, I can't unroll it in rhino. I will just be a straight 2-d surface such as this:

this doesn't produce the s-shape pipe when I make my physical model, will just be a straight cylindrical pipe.

Can anyone help me to solve this problem using grasshopper? I would appreciate this a lot. thanks :)

Rhino file is below.

Attachments:

unroll gh forum.3dm, 72 KB

Replies to This Discussion

Permalink Reply by David Rutten on September 13, 2014 at 1:52pm

A curved pipe is a doubly curved surface which cannot be unrolled to a flat surface without stretching or compressing.

Permalink Reply by Yeokho on September 13, 2014 at 9:32pm

Can I know how do I do that?

thank you

Permalink Reply by David Rutten on September 14, 2014 at 2:50am

You can't do it. Nobody can do it. It's mathematically impossible. If you want to make a wavy pipe by bending some material (paper, sheet metal, plastic) you will first have to approximate the shape with singly curved fragments, such as a succession of cut cylinders. Then each cylinder can be unrolled individually.

Permalink Reply by Yeokho on September 14, 2014 at 12:27pm

ok, thank you for you help, david. I found a way on how to approximate it.

RSS