topic Re: Inherit a child subassembly in a parent assembly in Fusion Support Forum

Inherit a child subassembly in a parent assembly

nkbhvid — Thu, 03 Apr 2025 16:24:40 GMT

I have build a major construction of several sub (and sub sub assemblies)

My question is how to inherit the joints from the child assembly in the parent assembly. How can this be done.

So far my only solution is to turn every imported subassembly into a rigid group.

Is there another way?

Best regards

Nicolaj

jhackney1972 — Thu, 03 Apr 2025 16:32:05 GMT

In a properly created assembly with Joints, they are preserved when this sub-assembly is inserted into an assembly. I show this is the animated GIF.

nkbhvid — Thu, 03 Apr 2025 16:47:52 GMT

Thanks for your reply.

This is a little bit strange. Your animation is how I remembered it (and expected it) to work.

But in my assembly I seem to lose the relations between child and parent.

The problem is not consistent, so Im trying to figure when -and when not- this occurs.

Am I right that a rigid group always will be lost between child and parent?

jhackney1972 — Thu, 03 Apr 2025 17:05:42 GMT

If done correctly, a Rigid Group, in a sub-assembly, will remain intact when inserted into an assembly.

TrippyLighting — Thu, 03 Apr 2025 18:11:10 GMT

If you can you share that assembly, that would help pinpointing the root cause.

Here are some tips:

1. Make sure your subassemblies are fully assembled as subassemblies.

2. If your subassemblies use the Pin feature, replace that with a ground-to-parent attribute.

Ground-to-parent is a relatively new "thing" that can be extremely helpful in assemblies.