# How do I create a constraint with Havok?

**URL:** <https://forum.babylonjs.com/t/how-do-i-create-a-constraint-with-havok/59497>\
**Category:** Questions\
**Tags:** physics, havok\
**Created:** [July 11, 2025, 5:22pm UTC](https://forum.babylonjs.com/t/how-do-i-create-a-constraint-with-havok/59497 "2025-07-11T17:22:03Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![HiGreg](https://avatars.discourse-cdn.com/v4/letter/h/c5a1d2/32.png) [@HiGreg](https://forum.babylonjs.com/u/HiGreg)\
**Post date:** [August 27, 2025, 1:31am UTC](https://forum.babylonjs.com/t/how-do-i-create-a-constraint-with-havok/59497/5 "2025-08-27T01:31:27Z")

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There is also this post of mine:

> [@Discussion of all possible constraint combinations](https://forum.babylonjs.com/t/discussion-of-all-possible-constraint-combinations/54079):
>
> I’m trying to wrap my head around Physics Constraints. I hope this starts a discussion we all can learn from. I think there are 20 possible constraint types, including LOCK and 6DOF. This boils down to 18 interesting ones. BABYLON/Havok only names 5 of these 18. The following table shows all possible combinations of locked degrees of freedom. From two other sources, documentation from [COMSOL](https://doc.comsol.com/5.5/doc/com.comsol.help.mbd/mbd_ug_modeling.3.07.html), and a [2005 academic paper](https://asmedigitalcollection.asme.org/IDETC-CIE/proceedings-abstract/IDETC-CIE2005/47438/1733/317126). COMSOL has some nice pictures and pretty detailed explanations linked from t…

All possible constraints are named and referenced.

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