On 01/04/2017 05:24 PM, Cory Heisterkamp wrote:
I'm far from an expert, but it certainly looks like an oxide coating to me. I'm reminded of the folklore when IBM was developing the RAMAC and finally had success with a magnetic paint mixed up outside of house. In that case it was easy to apply...just spin up the disc and pour! http://www.radar58.com/temp/drum.jpg http://www.radar58.com/temp/drum2.jpg
Yup, that looks pretty "oxidey" all right! Jon
