use "java prop" http://www.mh-aerotools.de/airfoils/javaprop.htm
(programmed by dr. martin hepperle) and send your file to stefan heuel ((sheuel><attt><web.de)).
he will use your *.jpdata -file to make a milling file and mill a aluminium mould for your calculated prop.
before milling you will get a 3D model file of your prop.
the costs are imo reasonable:
about 200€ for the polished mould.