We inherited a peeler, which has metal blade. The owner was not Shomer Shabbos. Aside from Tvilah issue, what about Kashering. Is there an issue of “duchka d’sakena’ or anything else?
There is no need to do anything else besides for toveling the peeler. Even if the vegetables that were peeled had tevel issues with them, we do not say that any taste was imparted from the vegetable i.e. potatoes, carrots or cucumbers., since we don’t use a peeler for sharp vegetables, such as onions, garlic etc. Therefore it does not need kashering at all.