Reply To: Johnson HS39 carbon rods and springs

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December 16, 2020 at 6:17 pm #225387
Michael Purpura
Participant

    I was able to machine the brushes out of conductive graphite. See photos and drawing. The rod is available from McMaster Carr. But the rod is 0.250” and has to be turned to 0.240”The springs are actually integral to the sockets. I assume they are attached to make sure there is a good electrical connection. See photos and drawing.