..A much simpler and satisfying way to make that mould for your spoon/lure , would be to sit and shape it out of a piece of balsa .Then gooi a plaster of paris mould ....then take the paris mould to a foundry and they will cast you an ally mould ...should rush your about R400.00...NOW....you have one of a kind ...with its little "imperfections" from your shaping on the balsa!!!!!....Thats how I've done all my own spoon moulds....AND...they work!!!...USE DONT USE IT!!!!