09-23-2013, 08:19 PM
I don't know what the original piece was. None of my chunks nested with any of the others that I could see. It must have been huge. Good quality metal. No noticeable crust.
One interesting thing - When you get a piece of metal from the scrappers, it may have been handled by an electromagnet. When the piece was turning on the lathe, I could see some CI dust clinging to the carbide bit. As the polarity of the residual magnetism reversed, the dust would pulse in and out on the edge of the tool. I should have made up a sensing coil to see how much voltage it was generating. I'll bet I could see it on the oscilloscope.
One interesting thing - When you get a piece of metal from the scrappers, it may have been handled by an electromagnet. When the piece was turning on the lathe, I could see some CI dust clinging to the carbide bit. As the polarity of the residual magnetism reversed, the dust would pulse in and out on the edge of the tool. I should have made up a sensing coil to see how much voltage it was generating. I'll bet I could see it on the oscilloscope.
Mike
If you can't get one, make one.
Hawkeye, proud to be a member of MetalworkingFun Forum since Jan 2013.
If you can't get one, make one.
Hawkeye, proud to be a member of MetalworkingFun Forum since Jan 2013.