My grandmother had one of the old school cast iron spiral apple slicers (which I’m surprised to see are apparently widely available for less than this plastic dealy). It was wildly impractical for regular use, but when you were pealing a couple hundred pounds of apples for vast quantities of apple sauce it was pretty necessary. Especially if you wanted to avoid slicing and coring. I would imagine this might be a little more reliable, and less finicky for frequent use. What with having a fixed, mandolin style blade. The little traveling blade on the old school ones was a bit shakey, but it did let you make curly fries.
