# MAYA: Constraint or Bind? Which one should I use?

**URL:** <https://forums.unrealengine.com/t/maya-constraint-or-bind-which-one-should-i-use/398026>\
**Category:** Character & Animation\
**Tags:** Maya, rig, bind, unreal-engine, question\
**Created:** [July 28, 2017, 7:26pm UTC](https://forums.unrealengine.com/t/maya-constraint-or-bind-which-one-should-i-use/398026 "2017-07-28T19:26:00Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![anonymous\_user\_562e11d81](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_562e11d81](https://forums.unrealengine.com/u/anonymous_user_562e11d81)\
**Post date:** [July 28, 2017, 7:26pm UTC](https://forums.unrealengine.com/t/maya-constraint-or-bind-which-one-should-i-use/398026/1 "2017-07-28T19:26:00Z")

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I’ve made a gun model wit ha skeletal rig - no hands, just the gun model. I wanted to animate the run cycle and since the gun is a rigid model as opposed to skin, instead of binding, I used Constraint. When importing the model I get

> Warning Could not find the bind pose. It will use time 0 as bind pose.

Does parenting the objects to bones work with unreal engine or can you only “bind” the mesh?

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**Author:** ![anonymous\_user\_562e11d81](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_562e11d81](https://forums.unrealengine.com/u/anonymous_user_562e11d81)\
**Post date:** [July 28, 2017, 7:27pm UTC](https://forums.unrealengine.com/t/maya-constraint-or-bind-which-one-should-i-use/398026/2 "2017-07-28T19:27:05Z")

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I’ve just tested something and apparently yes, you need to use bind to attach objects to bones. Parenting or constraint seems to be just a Maya specific rigging tool.

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**Author:** ![edlgmedia](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@edlgmedia](https://forums.unrealengine.com/u/edlgmedia)\
**Post date:** [February 6, 2018, 9:42pm UTC](https://forums.unrealengine.com/t/maya-constraint-or-bind-which-one-should-i-use/398026/3 "2018-02-06T21:42:02Z")

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Did you manage to figure it out? How do you bind them without getting the mesh to deform, so it acts like a mechanical object?