Keith,
The blokes who do the lost-wax casting for sculptors to produce bronze (or any material) sculptures could do this standing on their head. Find some arty person and they will be able to track one down or I think the phone book might be a help.
I had a mold of some rubber like material made to produce Dodge bonnet badges. Seem to remember it cost under $100. I just pour two pack resin into the mold (made from an original badge) and have put out about 20 badges. Once painted you can not tell them from original. Looks like the mold could produce hundreds indefinitely.
The rubber bit you are talking about could be used to make a solid mold (inner and outer) then the rubber mould material could be poured in. Once set, popped out and repeated ad infinitem. One offs are no problem as you only need mix enough rubber compound for the order.
Lang
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