Originally Posted by CPMcGraw

How difficult is that to do, in terms of automation? I suppose anything's possible within reason.

What about a different approach, like a special 'plug' that you use only in sustainer applications? Think about those Estes igniter retainers (molded plastic), but using that coating material instead? That way, the manufacturing equipment wouldn't have to be changed, and the plug would be no different than what everyone is already used to. Could something like that be made with enough resilience to work without breaking up more times than not?