Some years ago I saw a CNC machine cutting some aluminium parts. It used a wire as cutting element and the means of cutting was spark erosion. The beneift of this machining process was very low clamping forces. Whats the name for this type of machine ie "vacuum cleaner" not "Hoover"?
On a similar theme, there was an article some years ago about an R/C modeller who had built a spark erosion machine for carving the turbine blades for the model jet turbine he was building.
Anybody got good references sources for building such a machine?