Regarding the electrical device, I have everything I need to build one. Does the electrode get the positive side and the barrel gets the negative side?
Current flows from negative to positive.
I don't remember which. I have a good friend who's an elec. engineer and he just happened to be around when I did it.
If I remember correctly,...if it's hooked up backwards you can end up plating your rifle barrel.
So do some research,....then again, he might have just been messing with me....
