Nurgle Heldrake - Blight Drake – Coversion WIP: Greenstuff vs. Brownstuff

I started modelling the carapace using Greenstuff and ball-shaped pluggers. The goal was to reproduce the "hammer finish" look of the armour of the headpiece of the drone.

It all went off quite well; I was able to sculpt the basic shapes and get some proper dents into the putty. However, the end result wasn't satisfying at all.

Even though I worked with Greenstuff before on various miniatures I wasn't aware that it has some kind of "memory effect" - that's what I have learned after doing some online-research. So, Greenstuff tends to forms/bounces itself back to its former shape; it is not a lot, but enough to soften up modelled hard edges. And this is exactly what happened to the "hammer tends" on the carapace: they turned into some soft organic looking mush that has nothing in common with how the headpiece looks like (I am frustrated, so I am a bit exaggerating).

I did some tests and in theory I could wait 90-120 minutes until the Greenstuff has tried up to a state where it is not forming back, but then it also will be difficult to get into shape in general, and it is not guaranteed that I will get the hard edges that I want/need. Waiting that long to try hope that it will work out for each segment of the carapace is too risky: I need a procedure that I can reproduce to create a consistent look.

I started with looking for an alternative modelling putty. I ended up with ordering a pack of Brown/Aluminium Putty by P3. Due to aluminium particles it's supposed to hold up sharp edges and therefore is "ideal for modelling armour or weapons". I hope that this is case.
All I have to do now is waiting for the Brownstuff to arrive.