Diudischki
Tourist
I meant to send this reply days sooner but kept getting sidetracked; anyways, it sounds like you guys definitely know what you're doing!Hey thank you for your input regarding silicone firmness!
So if I may make another suggestion... this might strain the limits of practicality, but think you could try casting an inner ring of significantly firmer silicone inside the softer donut? It'd probably be tricky to figure out and pull off, because you'd need to find a way to suspend that firmer ring in place within the anus while casting the rest of the toy, but if you can manage it, you end up with a tailhole that's soft and squishy but still very snug!
This is just a friendly suggestion by the way; I will understand perfectly if this idea exceeds the limits of practicality. c:
And since I am horrible at explaining things, here's a general example I threw together in a few seconds, of the sorta ring-inside-donut structure I'm talking about: