Abstract: The invention concerns a process for the production of open pore ceramic bodies, wherewith is applied onto the contacting areas of the pores of an open pore matrix body a hardenable ceramic mass, this latter next being hardened and the matrix body being removed, there remaining behind a ceramic body of hardened, open pore ceramic mass. Before curing the ceramic mass, the matrix body is furnished with filaments extending, at least in one spatial direction, into this matrix body, which are removed during or after curing of the ceramic mass while forming appropriate channels.