One of my machinists used a paint shaker to mix up a 15 y/o bottle of cutting oil, that was about a 5 quart round bottle. He had an audience because he asked everyone if they thought is operated slow enough to mix the oil adequately. Well, he put it in the clamps and turned it on. The plastic jug crumbled into pieces and went every where. A few of us knew that would happen. A total of 6 hours cleaning up the mess.
