3d printed nozzles?

[Pertti]

Just wondering if there are metal 3d printted nozzles. The method would allow interesting shapes in order to produce fast filament flow.

[oliof]

@Pertti it is my understanding that 3d printed metal nozzles would require extensive post processing for smooth bore surfaces so maybe its not the most effective way to make one.

[o_lampe]

@Pertti SLS parts would probably be leaking everywhere? I imagine a certain degree of granularity which might also hinder thermal conduction.

[cosmowave]

@o_lampe The leakage is not a problem anymore. We use hydraulic fittings (material: titanium) for water and oil produced with SLS printers.
For a nozzle, the surface smoothness will be the biggest problem.