Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Used once and have 8 stitches to show for it!

As someone who eats high raw I am used to handling knives and sharp blades on blenders and processors so I handled the mandolin carefully. When I was attempting to change a piece my thumb met the blade and off to the hospital I went. The product is very cheaply made and awkward to deal with. You have to "pop" the blade out to change them. Needless to say, the blade met the actual bone of my thumb. I want to suggest that the company offer a blade shield of some sort so that others don't run into this same problem. I am terrified to use mine now and won't be able to prep food for at least 10 days.