Machine tool with improved thermal stability and method for improving thermal stability in a machine tool

A method for improving thermal stability in a machine tool comprising

• a workpiece support for supporting at least one workpiece for allowing machining of the workpiece,
• a support structure comprising a tool carrier support, wherein the tool carrier support supports a tool carrier, the tool carrier being configured for carrying and driving a tool for machining a workpiece supported by the workpiece support through a relative movement between the workpiece and the tool, the method including the following steps:
• providing an inner cavity in the support structure,
• burying a piping in the soil beneath the structure,
• forming a closed conduit with a surface part and an underground part wherein the surface part comprises the inner cavity of the support structure and the underground part comprises the piping buried in the soil beneath the structure,
• providing driving means for moving air in a closed circuit inside the conduit.