My research team worked on rapid tooling EDM electrodes for over a year.
We tried compaction methods for creating EDM tools from graphite powder,
with a little bit of polyvinyl alcohol thrown in as binder. Motorola does
hold a patent for a similar process (I'll send you the patent number if I
can lay my hands on it...).
Is it possible to mix graphite powder with any electric
conductive bonding material ? So that we can cast any shape out of this
powder and use it as an EDM electrode just an idea to get your views.
For more information about the rp-ml, see http://rapid.lpt.fi/rp-ml/
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