Abstract: Disclosed is a method of fabricating a construction element. The method may include assembling a mold on a rotational casting machine; rotating the mold around at least two axes at a predetermined speed; providing a first portion of magnesium silico-phosphate cement (MSPC) mix, having an altered hardening rate, to the mold while rotating the mold until at least a portion of the mold's walls is covered by a first layer of the MSPC mix; and rotating the mold until the MSPC mix is hardened to a predetermined degree.

Abstract: A device comprising: a bracket adapted to be coupled to a distal end of a robotic arm; a tool holder coupled to said bracket and configured for changeably receiving a first portion of a stone working tool, wherein said tool is movable in a reciprocating axial direction; a driving element for driving said tool distally along said axial direction during a power stroke of said device; and a guiding element for changeably receiving a body portion of said tool and for guiding said tool in said axial direction, wherein said guiding element is configured to resiliently return said tool proximally along said axial direction after said power stroke.

Abstract: Disclosed is a method of fabricating a construction element. The method may include assembling a mold on a rotational casting machine; rotating the mold around at least two axes at a predetermined speed; providing a first portion of magnesium silico-phosphate cement (MSPC) mix, having an altered hardening rate, to the mold while rotating the mold until at least a portion of the molds walls is covered by a first layer of the MSPC mix; and rotating the mold until the MSPC mix is hardened to a predetermined degree.