Experimental 3D printing of a steam engine made out of stainless steel.

In the engine case, the working cylinder and the slide valve are made as one part. The drive levers are printed with M2 and M2.5 threading.

All parts are printed on a metal 3D printer AM3D Pro with stainless steel powder for 3D printing (PR-H15N5D4B by Polema).

As a result of 3D printing with metal, both channels can be blown through. Despite the fact that the channels are almost horizontal, the correct selection of the powder melting parameters during the printing process allows you to print such channels without using support structures. In this case, the channel has a round shape. To improve the quality of the upper wall of the channels when using 3D printing with metals, we recommend using a teardrop shape.