Nobby
Thanks, but I don’t know this machine had a look at one of my buffers the female/base plate and the male connector on machine are an alloy bit of plastic cover between it and metal workings, rest of machine mainly metal apart from motor cover plastic, I assume this is the standard format of this type of machine of what ever speed
I only used the word rusting in general terms, as don’t know the correct word for pitting in an alloy.
Len