One Mini 3D printer can be used to produce 3D solid parts with complex custom shape without mechanical processing. This type of printer is often used to produce parts with very complex internal holes, asymmetric holes, and so on. The One Mini 3D printer can also be used to make metalic molds from plastic parts, using technologies such as electro-forming and more. It is worth noting that plastic parts that are quickly produced with the help of the One Mini 3D printer can also be used as a model for the casting of metal parts by the sand-mold casting technology.