What am I?

I go in hard. I come out soft. You blow me hard. What am I?

Like a river I flow, and you’re happy I do in vain. There is no escaping from my course, without causing pain. What am I?

I am taken from a mine, and shut up in a wooden case, from which I am never released, and yet I am used by almost everybody. What am I?

I start with M and end with X. I have a never ending amount of letters. What am I?

Riddles and Answers