Talk:Enchanting/@comment-26958753-20150920022732/@comment-25912201-20151010233055

Make multiple bows and then be sure the enchant level is at least above 20+ (not sure optimal level for infinity) and check each bow and see if one of the previews is for the infinity enchant. If none are infinity then place a torch between the bookshelves and look again, if there isn't once more, enchant something random, as to reset the enchanting previews for each bow, and repeat the process(remember to remove the torch after you enchant something to reset the previews).