climbing my grandfather

• ' i decide to do it free, without a rope or net' - metaphor of extreme sports, determination to attempt to be like grandfather even though it may be risky.
• 'discover' changes to 'knowing' shows that he feels he has got to know his grandfather throughout the poem which is what he had wanted. this will allow him to be like him in the future.
• 'smooth and thick like warm ice' - oxymoron shows the child admires his grandfather as he can be 2 opposing things at once