Hi everyone: I have an 820w Black & Decker grinder to which the emboninado one of the cables was cut ... I leave photos for better understanding. The point is that it is impossible for me to weld it because it is dissolved. And when I managed to solder it with tin, I put it back together and when I plugged it in, it made a spark that I gave up on plugging it in again. I took strength and disassembled it again and put nail polish on all that part, I put heat shrinkable cable and reassembled it, but it makes a spark again. My question is if I can take another winding of other grinders that I have and replace them. Or should I take into account the Watts of each grinder and find one that has the same characteristics as my grinder?