Both are grammatical, but they come across differently. I'll illustrate by setting the sentences if they came from the script for a (poorly written) play.
CARPENTER: Welcome to today's lessons on carpentry. Please bring your tools with you, and state your name and title as you enter.
ROBIN enters, carrying a bag of tools.
ROBIN: Robin of Loxley, bow-making, if you please.
APPRENTICE: This way, sir.
GEORGE and VAISEY enter, empty-handed.
GEORGE: We're just peasants, but we'd like to learn to make targets. Um, could we perchance borrow a plane?
APPRENTICE: Where's your plane, peasants?
GEORGE: We're sorry, sir, but we don't have any.
APPRENTICE: Very well, you may borrow this axe head and do what you can with it. Be sure to bring it back.
JOHN enters, also empty-handed.
JOHN: My name is John, and I'll be a prince one day. Show me to ...
APPRENTICE (under his breath): Not you again.
APPRENTICE (to JOHN): Where's your plane?
APPRENTICE (under his breath): Peasants.
JOHN: storms out