The M7 production starts in the pre-fabrication with a drilling machine and an experienced employee. In this production step we stay traditional, too. We only use the CNC milling for the newer capsule constructions.

In a parallel step the grid is manufactured with a vintage hand press (German: Handspindelpresse).

The most important part next to the electrode is the membrane. The M 7 s uses our self-made PVC membrane covered with gold. The membrane manufacturing process hasn´t changed since the developing of the M 7 in the 1930`s.