Hugh,
For larger volumes: A Deli Slicer [1]. This is one with a rotating blade with adjustable depth. I don’t know about the above, because I got mine from a second hand store, and it’s an old one built like a tank. It helps for freeze-drying as well as dehydrating. The problem with Mandolin slicers is the pressure or movement for some things to slice and limited capacity, and I even have one with a ceramic blade. The deli slicers make short work of large blocks of food. – T.Z.