Method for producing a mold for the production of manhole bottom pieces and method for producing manhole bottom pieces

摘要

The invention provides a method for producing a mold (56) for the manufacture of manhole bottom pieces (42), comprising the steps: providing a base body (14) from a mixture comprising a sand material and a binder, or from a foam material, Machining of the base body (14) in at least one channel section in accordance with the negative geometry of the channel to be produced, so that a negative shape (30, 38) is produced, inserting the negative shape (30, 38) into a basic shape (54).