just a quick one grinding discs marked inox or stainless are only iron free so when used thay dont make your stainless form a rust on where its cut or ground
this is what i was told buy a rep who supplied us abrasives we used to sell when i was a welding tec/support advisor
its a bit like puting a rusty wet bolt or iron grindings on a bit of stainless it will start to rust
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