Quote Originally Posted by Scotsman Hosie View Post
John,

Unless I'm seeing things, the lower electrode does not appear to be electrically isolated from the chassis. (Though it would appear to be the easiest one to isolate.) But regardless of the low voltage, the high amperage is going to weld everything in that handle up, if there's a dead short through the chassis.

Seems like a funny detail — not to at least allude to in the video.

Donnie
Have a look at the 8:10 to 9:35 part of the video. The guy is doing and mounting the insulator for the lower electrode from brown Phenolic rod (composite material) which is a good electrical insulator and also heat resistant.