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Basically, if I bend a subdivided plane on the Z axis 180 degrees with the Simple Deform modifier and I've applied the modifier, is there any way to undo that bend? I have a mesh that looks like A, is there any way to deform it into mesh B?

I've been trying to achieve that with another Simple Deform Modifier, playing with the origin, the angle and so on, but I've been completely unsuccessful in getting back to the original shape.

enter image description here

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  • $\begingroup$ First though, playing with the modifier angle? Or do you really want to keep it and add something else to obtain the B shape? $\endgroup$
    – lemon
    Commented Sep 14, 2020 at 9:10
  • $\begingroup$ @lemon I had a very complex mesh that was a curtain that I spent quite a while texturing and modeling. I accidentally applied a Simple Deform modifier on it. I want to revert it back to how it was before applying the modifier, but I no longer have that save. $\endgroup$ Commented Sep 14, 2020 at 9:13
  • $\begingroup$ ok... did not mentioned it has been applied... $\endgroup$
    – lemon
    Commented Sep 14, 2020 at 9:14
  • $\begingroup$ I was able to bend it back with another Simple Deform modifier, playing with the angle and finally setting it to -112 degrees, but it's still a bit curved, like this: i.imgur.com/ukgBj8N.png It's what I meant by playing with angles. $\endgroup$ Commented Sep 14, 2020 at 9:17
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    $\begingroup$ @RobinBetts select face loop in order, pop face at one end rotate others about edge (by face normals rot diff // aka edge angle) repeat till at other end. $\endgroup$
    – batFINGER
    Commented Sep 14, 2020 at 9:59

1 Answer 1

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You can try this way:

  • Let's say you have object A (your half cylinder). Create a plane (object B), give it a Simple Deform/Bend modifier, bend it 180°:

enter image description here

enter image description here

  • Overlap the 2 objects (scale object B if necessary), give to object A a Surface Deform modifier with object B as Target, click on Bind:

enter image description here

  • Bring back object B to an angle of 0°, object A will follow:

enter image description here

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  • $\begingroup$ that's a very nice approximation! i was wondering if there is a more perfect method? $\endgroup$
    – Harry McKenzie
    Commented Aug 17, 2023 at 8:07
  • $\begingroup$ @Harry McKenzie Robin Betts had a cleaner method but I can't tell you where to find it :( maybe he could tell $\endgroup$
    – moonboots
    Commented Aug 17, 2023 at 8:22
  • $\begingroup$ oh i found it, there was a link in the comments of question. blender.stackexchange.com/questions/185087/… $\endgroup$
    – Harry McKenzie
    Commented Aug 17, 2023 at 8:31
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    $\begingroup$ Oh OK that's it ;) .............. $\endgroup$
    – moonboots
    Commented Aug 17, 2023 at 8:32

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