Join static meshes into one (for physics purposes) in BP

I am trying to make a “tree” with BPs, so far the constraints are disappointing because no matter how “strong” I make them they aren’t strong enough by far. If I could change their mass in the BP I could solve this problem but I can’t.

So I have relegated myself to having large portions of the tree not connected by constraints but just connected. Like a true “lock”, as if the meshes were created as one in the beginning

Is this possible?

In 4.5 there’s a new feature called welding which will do exactly this

yes yes oh yes!