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So apparently you can already print Torlon!! More known as for being the material used to build the plastic engine on the 80s. It has very high mechanical properties and can withstand high temperatures. So many possibilities are available, and so little money... I think it would be possible to...

Cool!!! I didn't knew it was already that far!!! I also dream about printing my on engine, specially because I like the crazy one's :p But considering that the cost of a prototype engine on the OEMs is over 200k (or something like that) I wander how far more till it is viable to start...

How big can you make a part out of 3d printed titanium? I guess it is pretty expensive to make something ordinary out of it.

I'm aware that NASA and others are already printing some metal functional pieces, but I don't know exactly what kind of metals they use and how accessible is the technology.

I have one question, how much can a metal 3d printer can substitute the sand casting? Can I already print functional engine blocks and crankshafts?

Hei arborpress did you got any advance on your idea of building a non conventional engine? I have been always interested on the Revetec design, and I think building one is probably quite doable for someone with the right skills. I'm "only" a powertrain engineer, so I have the technical...