As it says on the tin, the grinder safety course can’t be started (see picture below). I didn’t see a Talk topic related to it, so thought I see if this is an oversight, or perhaps the course just isn’t ready to be opened up.
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That isn’t really a working class anymore. The bench grinders don’t require training. Just don’t grind anything except for steel.
Absolutely never grind aluminum, copper, brass…plastic, wood…etc…etc.
People try to grind aluminum all the time and it causes the wheels to load up and can cause damage/explosions. We discipline as necessary when people misuse our tools.
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Thanks Max 
I for one had no clue about grinding nonferrous metals and the dangers it poses until I read the associated Talk threads.
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