Not really. I had a core plane in a desk drawer for years. Each time I got it out to show someone, bits of core would shake out onto the floor. See, the little

Not really. I had a core plane in a desk drawer for years. Each time I got it out to show someone, bits of core would shake out onto the floor. See, the little ceramic cores decay over time and fall apart. By now (if I hadn't gotten rid of it) it would have no cores left. Literally, 'bitrot'.