I will check out these threads, but my tortoise just doesn't seem interested in eating the cuttlebone available to him. Is there any way to "trick" him into munching on it occasionally?I'm thinking that if he's interested in chewing on something hard like an acorn, he may want something to file his beak down on? Maybe try keeping some cuttlefish bone or cactus/veggie block in his indoor enclosure. It's OK for him to eat and will provide him with some extra calcium.
If his beak is really overgrown, there are many threads here to assist! I had to trim mine too and it wasn't fun but I think my Russian can eat a lot more easily now.