Electro Chemical Machining (ECM) has been neglected as
a micro-capable technology for many years. The process was
used mainly for sinking processes, deburring, and was developed
to work in the aerospace industry working on turbine
blades in the form of STEMdrilling. The major advantages of
the process are the high removal rate (energy efficiency),
simplicity of the process, there is also no associated electrode
tool wear and there is no defective layer left after machining.
The latter makes this process extremely desirable for aerospace,
medical, MEMS and many other applications. In addition,
there is no debris left from the process which means that
no post-processing of the workpiece is required. In the recent
years, pulsed ECM has appeared where the removal of material
in a specific area has become more controllable. However,
the boundaries of the process are also not well known yet. This
process, unlike mechanical processes, lies in the grey area of
chemistry, electric pulses and mechanical structure of the
machine tool capabilities.