How power transformers are made.
<video controls autoplay loop> <source src="https://s3-us-west-1.amazonaws.com/hmt-forum/power_transformer_manufacturing.mp4" type="video/mp4"> Your browser does not support the video tag. </video>
Previously:
https://www.homemadetools.net/forum/...765#post124195
https://www.homemadetools.net/forum/...813#post140291