I once read that storing garden hand tools (weeder, hand shovel, pruning sheers, etc.) in sand mixed with a little bit of mineral oil is a good practice because it lubricates them and keeps them sharp.
I have been doing this for several years, but I now question that this is a good idea - at least for the pruning sheers. They get sand all through them and seem to dull faster than I would expect.
Is the practice of storing garden tools in sand wise/good (e.g. does it actually actively help tools)? Or have I been slowly ruining my garden tools?
Update: By "store", I mean between uses, not just over the winter (though, in practice they get placed in the sand over the winter as well).