I made a couple of molds to be able to convert some of my old plastic [Hersey] Rhinos to predators and vindicators.

The Predator turrets were made from a casting of the original epic turret. The Dozer blade of the vindicator was made from plastic card and green stuff then molded in silicone. I usually make the demolisher cannon out of two different sized brass rods (not shown)

After painting the effect is good.