# mate primitives

**URL:** <https://forum.cadmunity.com/t/mate-primitives/879>\
**Category:** SW Motion Analysis\
**Created:** [July 19, 2021, 6:50am UTC](https://forum.cadmunity.com/t/mate-primitives/879 "2021-07-19T06:50:06Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Assis\_As](https://forum.cadmunity.com/letter_avatar_proxy/v4/letter/a/ac91a4/32.png) [@Assis\_As](https://forum.cadmunity.com/u/Assis_As)\
**Post date:** [July 19, 2021, 6:50am UTC](https://forum.cadmunity.com/t/mate-primitives/879/1 "2021-07-19T06:50:06Z")

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hi

i am trying to understand mate primitives to create two revoulte joint , but could not manage to create joints . i am getting only cylindrical joint

any advice please thank you  
 ![2.PNG](https://forum.cadmunity.com/uploads/default/original/2X/7/71c614fc52180081b535dec592e655f8282a4677.png)

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**Author:** ![zwei](https://forum.cadmunity.com/user_avatar/forum.cadmunity.com/zwei/32/6052_2.png) [@zwei](https://forum.cadmunity.com/u/zwei)\
**Post date:** [July 19, 2021, 11:56am UTC](https://forum.cadmunity.com/t/mate-primitives/879/2 "2021-07-19T11:56:49Z")

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> [@](#):
>
> hi
> 
> i am trying to understand mate primitives to create two revoulte joint , but could not manage to create joints . i am getting only cylindrical joint
> 
> any advice please thank you

I had gotten rather rusty with motion analysis… but have you tried replacing the mates with hinge mate instead?

Edit: added image, reply too fast before image can upload 🕶  
image.png

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<div class="post-metadata">

**Author:** ![Assis\_As](https://forum.cadmunity.com/letter_avatar_proxy/v4/letter/a/ac91a4/32.png) [@Assis\_As](https://forum.cadmunity.com/u/Assis_As)\
**Post date:** [July 19, 2021, 12:09pm UTC](https://forum.cadmunity.com/t/mate-primitives/879/3 "2021-07-19T12:09:54Z")

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thank you for reply

motion analysis is very complicated specially dealing with redundancies , i did two hinge mates but again i am getting one hinge mate redundancies

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**Author:** ![zwei](https://forum.cadmunity.com/user_avatar/forum.cadmunity.com/zwei/32/6052_2.png) [@zwei](https://forum.cadmunity.com/u/zwei)\
**Post date:** [July 19, 2021, 12:30pm UTC](https://forum.cadmunity.com/t/mate-primitives/879/4 "2021-07-19T12:30:12Z")

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> [@](#):
>
> thank you for reply
> 
> motion analysis is very complicated specially dealing with redundancies , i did two hinge mates but again i am getting one hinge mate redundancies

Mind sharing your files?  
Mine seem ok  
image.png

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<div class="post-metadata">

**Author:** ![Assis\_As](https://forum.cadmunity.com/letter_avatar_proxy/v4/letter/a/ac91a4/32.png) [@Assis\_As](https://forum.cadmunity.com/u/Assis_As)\
**Post date:** [July 19, 2021, 12:50pm UTC](https://forum.cadmunity.com/t/mate-primitives/879/5 "2021-07-19T12:50:28Z")

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i had followed your strategy somehow 4 revolute joint , created with two redundancies.please see file

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<div class="post-metadata">

**Author:** ![zwei](https://forum.cadmunity.com/user_avatar/forum.cadmunity.com/zwei/32/6052_2.png) [@zwei](https://forum.cadmunity.com/u/zwei)\
**Post date:** [July 19, 2021, 1:18pm UTC](https://forum.cadmunity.com/t/mate-primitives/879/6 "2021-07-19T13:18:02Z")

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> [@](#):
>
> i had followed your strategy somehow 4 revolute joint , created with two redundancies.please see file

I created 2 additional ref plane for hinge mating on the bse part and remove all the mate and replace them with hinge.  
It seems fine for me  
image.png