A device for producing molded concrete blocks includes a mold lower part in which at least one mold cavity is formed and a mold upper part including at least one pressure piece with a lower face facing the mold cavity, an upper face facing away from the mold cavity, and lateral surfaces, wherein the pressure piece has fluid openings on the lower face and/or on the lateral surfaces and is designed to engage into the mold cavity such that when the pressure piece is engaged, a fluid can be introduced into the mold cavity from the fluid openings and/or when the pressure piece is engaged, a fluid can be discharged out of the mold cavity from the fluid openings.

A pottery molding tool for creating a vessel, and a method of using the tool, are disclosed. The tool has a molding body having a first end and a second end and a generally circular cross-section between the first end and the second end. The body having a first diameter at the first end and a second diameter at the second end which is equal to or larger than the first diameter. A handle is formed at the second end and a handle base formed on the handle. The handle base configured to securely support the molding body and handle when the base is resting on a surface. The method includes forming the vessel on the molding body, rotating the tool to rest on the handle base, and removing the vessel formed on the molding body.