Just out of intrest,if you google Up creek garage here in Australia and go to our work you can see how a 1909 Grand Prix engine block was created using 3d printing/pattern making etc.There is a video from the 730 report on how it was done.I can find out roughly how much is was to do one a mate has the same problem and knows the owner,it would have been expensive but they had patterns made,so i can be done but obviously it costs.The CSIRO also do printed titanium rapid prototyping,last time i spoke to them it was $750 aussie dollars per kilo for "stuff"u send the cad program.