- Future X-ray telescopes aim for large effective area within the given mass limits of the launcher. A promising method
is the hot shaping of thin glass sheets via a thermal slumping process. This paper presents the status and progress of
the indirect glass slumping technology developed at the Max-Planck-Institut for extraterrestrial Physics (MPE). Recent
developments in our research include the use of the mould material Cesic under vacuum, as well as the fabrication of a
high-precision slumping mould, which meets the requirements of large, high angular resolution missions like
ATHENA. We describe the way forward to optimise the slumping process on these materials, the force-free
integration concept and its progress, as well as the first test on reflective coating application.