My mandoline was given to me by my then boss, a Korean man, when I was learning Korean cooking. He told me very clearly that it was DANGEROUS! and to be very careful - but I almost lost a finger the first time, too ;-)
You’ve got to use one with a very good guard. But I’m still scared to death of them...
-JT
After slicing my fingers a little too often, I broke down and got a set of butcher’s gloves. They’re made from a fine-mesh chain mail, and are especially handy when using the meat slicer!!!
Try using a Kevlar glove. You can get them fairly inexpensively (Amazon) and food grade.