So i found a boat with a leather cap with mending. Is there any way to get it off and into a book or put it on anything else?
Nope. You can remove enchants from an enchanted item via the 1.14 grindstone, but those removed enchants are gone forever (the grindstone rolls back the item so you can try again).
No. I'd keep it, though. It's free armor and a free enchantment.
Crazy, toys in the attic I am crazy
Truly gone fishing
They must have taken my marbles away