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I don't know how to make tied knots, for example when I want to make shoe lace. Someone can help me, please? Thank you (:

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    $\begingroup$ using a curve with bevel and taper object, and... be patient ! $\endgroup$ – lemon Aug 15 '16 at 13:41
  • $\begingroup$ Someone may have a better idea... or some trick to do quickly a 'real knot'... or the torus knot addon may help too (have a try). There is two version of this addon torus knot and torus knot plus $\endgroup$ – lemon Aug 15 '16 at 13:48
  • $\begingroup$ Yeah! I'm going to get this addon right now, big thanks!! :D $\endgroup$ – YôL Aug 15 '16 at 13:59
  • $\begingroup$ ... found a quicker way... I write an answer in a minute... $\endgroup$ – lemon Aug 15 '16 at 14:18
  • $\begingroup$ okay! I didn't find the "torus knot" addon more! :/ $\endgroup$ – YôL Aug 15 '16 at 14:24
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You can start with a simple mesh which roughly defines the knot shape, which for now is flat. Top view here:

top view

Then give it some relief and add a subsurf modifier, still roughly :

enter image description here

Now, convert it to a curve :

  • Alt+C then curve from mesh
  • Enter edit mode, set the curve type to bezier then the handles to auto
  • Now set some bevel to the curve

enter image description here

Doing this, you may have some adjustments to do, but initial vertices (in "mesh mode") are much more easy to manipulate than starting with a curve from the beginning :

enter image description here

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  • $\begingroup$ Wooow! You've made it, I feel much better, you save me!!! $\endgroup$ – YôL Aug 15 '16 at 14:48
  • $\begingroup$ How would I use this method to make a moebius loop? $\endgroup$ – Leonardo-Paradox Aug 17 '16 at 6:25
  • $\begingroup$ @Leonardo-Paradox, I don't know if this method is appropriated for a moebius loop. You should ask another question, this is the principle in BSE (as the comments are not intended to be used like in a forum). If you do, be sure to add some pictures or drawings about the final result you want. In this new question you can refer/link to this one if you think it is needed. $\endgroup$ – lemon Aug 17 '16 at 6:28
  • $\begingroup$ @Leonardo-Paradox, but for now I see no way to do it with this method (curve twisting problem). $\endgroup$ – lemon Aug 17 '16 at 6:50

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