Oyumaru plastic clay

Over on Beano's Forum a user called Beano Boy posted about using Oyumaru to create simple moulds. These can then be used with greenstuff to create simple duplicates of a master. Here's my first attempts at creating some extra wheels using an old wheel from an Airfix Scammell.

Quite a sucess for a first attempt, but the greenstuff needs to be left a while longer than normal to harden fully.