2 Stroke Prosthetic Bunny - the action figure - part 3

Phase 3: completed clay model (continuation of my July motor bunny post)
currently residing in my meat freezer (since oil-based sculpting clay tends to get softer with heat, so baking it in the oven - as a fore mentioned - is right out)...

i'm still trying to figure out how to best sculpt the moving joints - there is surprisingly NOTHING on the webs about this subject...if any of you have a suggestion, please let me know!

the next step is to create 2 part block molds for each of the pieces. i'm using a 74/30 hardness polyurethane rubber (2 part liquids) to pour the molds (quite spendy at $12.50 the pound - especially as i'll be needing at least 8 for this guy - that is if i make no mistakes)...

...unfortunately, the clay master only survives 5% of the time during demolding.