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Thanks so much for your quick reply. I ran into the article about Graphite electrode, I will give it a try, the problem is I do not have the vacuum in place to machine graphite yet. I use HIRSCHMANN system 5000 electrode holder, The Agie Mondo 50 has tool changer....but I can barely run it now! Everything is new to me. once again thanks for your helps.
Allen
Excellent point plastikdreams...
While a fine grade graphite is definitely the right move over copper, there are also processing methods that need to be considered.
Multiple electrodes and burn tool paths.
I would recommend straight -Z roughing under-size on all sides and bottom (example: -.025" electrode leaving .005" stock per side), and then using an under-size (-.035") second electrode to burn into the corners in X, Y, and -Z.
What this does is disburse the energy (heat) over three faces of the electrode instead of concentrating the energy (heat) on the easily eroded sharp corners of the electrode.
Jay Crumb
Advanced EDM, LLC
440-567-5808
View attachment 199107
This is why the good lord invented cheap shop vacs sold at the big box stores. Along with cardboard and duct tape collectors.... the problem is I do not have the vacuum in place to machine graphite yet. ....
Allen
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