Did you ever see that guy on youtube who returned a half eaten bag of chips to Walmart? Same kind of deal, people think they're gaming the system but they're just making things worse for the rest of us. I knew a guy who bragged about returning a Christmas tree in January every year, stripped of its needles and everything. He finally got banned from the store but acted like he was the victim. It's just embarrassing to watch someone think they're clever when they're really just taking advantage.

My buddy ignored coolant pH for a year and trashed his mill spindle.

That ice cube trick @hugo_craig mentioned is smart, I read it on a budget blog last week and started doing it myself.