Cuisinart Black Non-Handled Mandoline Slicer with Stainless Steel Blades, 4 Slicing Options

I've used it twice so far to slice potatoes and onions. It's great for thin-slicing potatoes. It takes awhile to get used to the motion required. The food guard is a bit big to fit in the palm of my hand, which it's supposed to do. Hoping I become more proficient with more use.

I'm just starting to get the hang of using this mandoline. I have pretty good knife skills so it's a bit different using a tool that does the work for you but even with my knife skills( I previously worked at a military dining hall prepping vegetables) I can't slice as thin as this can.