I started my new welder up today and did a couple of test welds. The welds look really good and much better than my previous welder. I welded some copper to a washer at very low voltages and also checked to see how fine the settings can go by welding 80 micron gold plated tungsten wire to a washer (the photo below was taken with my microscope) and I placed a small BC 847 surface mount transistor next to it. My probe tips are all messed up and I am busy cutting new ones with my lathe which will make much better looking welds. I will also test the ESR this weekend and I'm hoping that it will be in the 0.001 to 0.0015 Ohm range.