Just because this was your experience does not mean others should not try, and frankly, your posts suggesting others not try is disgusting. You're on a forum for people with a hacking ethos. That's pretty much the "hold my beer" mindset with a facade of classiness in front of it.

Also, rather than saying such negative things like "don't do it", you could have wrapped up your negative experience into a parable for people to learn from before embarking upon their own journey. Just because you didn't prepare for the results of grinding something to a fine dust/powder doesn't mean others won't prepare for that. Especially after what could have been a much more positive outcome from your negative experience. Don't be a downer.

This would be haha funny if you were trying to stoke that "don't tell me no" as reverse psychology.