Liam's kit-bashed Defilers / Brass Scorpions I think won him best 'beast' at Throne of Skulls, he recently sent me through some WiPs which may help folk see how he did it.
Each armoured plate is made from a section of pipe with thin Plasticard reinforced edging strips.
Quite a large use of cables and wires for the back.
Elements from the Forgefiend for the head and Defiler bits for the legs.
Here's the pair.
And then came painting, with non-mteallic metals and battle damage across the model.
Different colours of cables added contrast on the back.
Here's an in progress shot of one Defiler, plenty of work still to do.
Liam's 'White Dwarf' shot. Perhaps the biggest compliment was that despite the size difference between the scratchbuilds and a Forgeworld Brass Scorpion one GW staff member did believe this was the Forgeworld kit!
And the Heldrake to match