Alternative to a mandolin for slicing.

Having just sliced the top of my little finger again on my mandolin (made by that company with lots of zzzz in it's name) can anyone let me know if there is a better method/make please.

My knife skills aren't brilliant and, if I'm cooking for the multitudes, I get bored slicing by hand. I suppose I could ask the resident, but retired, surgeon but he's a bit too pernickety!