As part of an animation, I'd like to show/hide a decal. I couldn't do it. Is this possible?

Is there a reason to prefer concentric mate over coincident axes? It seems as if they both make the intention clear. Is one faster to resolve in an assembly? One issue is that lock rotation is only available in a concentric mate.

I made some simplified parts and created an assembly configuration using them. In my assembly, the mirrored parts don't inherit the configuration of the originals. Do I have to explicitly change the configurations of the mirrored parts to the simple versions?

That makes sense. Thanks for illustrating it so clearly.

If I have two assembly configurations, when I add a new part to one assembly, I will have to go to the other assembly and click to use the part's simplified configuration? Is that right? Would an alternative be to make a global variable in the assembly (called "Simple" perhaps) and link th...

In an assembly, is there a way to toggle between using simplified parts? If I make a bunch of simplified part configurations, is there some flag or setting in an assembly which I can set so that the assembly uses all simplified parts? Or is the way to do this to make a new assembly using the simplif...