I’m a little confused as to what you are trying to accomplish. In the comment above you mentioned:
So if I want to construct an actor blueprint with multiple physics simulating components, that are welded together (as in the AttachToComponent node) I can only do that by explicitly calling AttachTo… ?
But here you mention:
I may want to stick maybe 100 different mesh components on an actor which are complete immovable to each other, and have 10 of those actors.
What exactly are you trying to accomplish? This may help me better understand your expected behavior for welding is.