[AT] OT EDM Drilling on old tractor steel and iron.

[James Peck]

Probably 25 years or so ago, an article discussed a homebrew low tech EDM a man had built to EDM a broken tap out of the aluminum block or head of a small engine. The article may have appeared in “Home Shop Machinist”.

The downside is that the setup may have only worked in the down direction.


https://www.makino.com/machine-technology/machines/edm-hole-drilling



[James] How did your experiment using an EDM sold only to burn holes in hard materials work?
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