What difficulties does Johnny encounter as he tries to finish the silver bowl?

Johnny is in a hurry to perfect the handle before Monday, when it is due to Mr. Hancock. But when he gets back to the shop, there is no charcoal. Dove is purposely unhelpful. When he finally brings Johnny some charcoal, it is not good enough to use and the boys quarrel. Mr. Lapham declares that no one in the house will work for the rest of the day. Because tomorrow is Sunday, this means that Johnny won’t be able to work on the handle at all.