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Physical Parent

The parenting tool of the future!
Don't you hate it when you flip your parented car and its body goes through the ground? Or having to use jelly welds to get any physics at all?

Physical Parent allows you to parent entities while keeping perfect, rigid collisions.

This tool will also allow you to create normal parents, with all the settings you've come to expect, such as removing shadows, constraints, and setting the weight of parented entities.
It is recommended you use normal parents for the bulk of your contraption and only use Physical Parents for props that set the collision bounds.

It also comes with Physical Unparent, a tool capable of unparenting both physical and regular parents. And it has area select!

You can change the collision complexity per player limit using the server cvar "sv_physparent_maxcomplexity". The limit is in place to prevent people from creating laggy parents.

(Also, note that the introduction video is a bit outdated in the sense that you no longer have to start with an unconstrained contraption. You can now directly add physical parenting to existing contraptions without any special action required)

If you find any bugs, post them in the bug reports thread!