Cheers Robin, I have seen that site from a previous post you made on another thread. Ebay is also a good place to find parts for molds there are a few chinese sellers selling ejector pins, springs and bushings, I dont have a link but they should be easily viewable.

Thanks for the heads up on purging deisel I was not aware of how toxic some plastics are when burnt or that you should not mix certain plastic together for safety.

The rabit takes molds bases that can be made on the lathe ie. cyclindrical not square, at some point someone has modded the machine to also accept bigger square or rectangle molds. The machine came with a manual with some basic dimensions and mold making tips. I will try and scan some important pages and see if anyone can help me work out how to cut the injector gate on the rear of the mold.