Onshape parts will no longer move in an assembly?

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  john_mcclary Member, Developers Posts: 3,898 PRO

  May 2020

  Everything is group or fasten mate.
  
  Those both restrict movement.
  
  If you need things to move, you will need to use less restricting mates, such as revolute.
  
  You will never want to use a group mate with an assembly either. That alone will cause other problems down the line

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  robert_scott_jr_ Member Posts: 317 ✭✭✭

  May 2020

  
  

  You will never want to use a group mate with an assembly either. That alone will cause other problems down the line

  
  So parts that have been conveniently grouped should instead be fastened? When is the group mate intended to be used? - Scotty
  

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  john_mcclary Member, Developers Posts: 3,898 PRO

  May 2020 edited May 2020

  You can use group on everything, but if you select an assembly then it basically freezes that assembly on this level.
  
  So if you update the sub assembly the positions of the parts will not update or worse yet, appear to explode. 
  
  All you need to do is suppress then unsuppress each group mate to fix it. But that step is not a good workflow
  
  The proper way is to mate everything in the subassembly how you want. Then on the higher level assembly, you only attach the sub assembly by the one connection point.
  

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  16156Rcubed Member Posts: 5 EDU

  May 2020

  Thanks so much! This helps a ton! We're still breaking it but not as often. We're just too new at Onshape. -- 16156 R-cubed FTC
  
  

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  john_mcclary Member, Developers Posts: 3,898 PRO

  May 2020 edited May 2020

  It's no problem, I was all for group mate at first. It took many hard lessons to get me to really understand when to group and when to avoid it.
  
  Practice, Practice, Practice

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