It’s not an automotive tool but it’s adjacent. I picked up a Work Sharp precision adjust sharpening system at a gun show this weekend. I bought the deluxe version that had some extra stones and a storage case. IMO it is easily the best sharpening tool I have ever used and totally worth the $110 I paid. Every knife I sharpened with it will slice free hanging paper now, including ones with super steels that are considered really hard to sharpen. I can’t recommend it enough.
