I love em,.. but had a horrible experience once.
Working at BK as a youth, I was told to slice onions. They brought me to the back room and showed me the slicer and the box of onions. This slicer had a bin, and a rotating blade on one side of the bin. Basically, you turn the handle and the blade takes slices out of the onion and discharges them to the other side.
This was the worst food experience I've ever had. Bout 1 minute into the sliceing, I began experieincing horrendous pain in my eyes. Long story short, I finished the job with suran wrap on my face,.... I also quit that job that same day.