DIY pulse EDM at last with very low electrode wear

In the fourth part of my pulse EDM series I finally got the results I need to make my Stirling heaters and coolers. It was really a long journey with a lot of drawbacks but now I am very happy to have a true DIY pulse EDM after the self build book of Ben Fleming. It has nearly zero wear and can be used for many more things that would be impossible with conventional machining, I have a lot of fancy ideas for it. Thanks for watching and as always I would be very happy for your comments and suggestions.