Looks very good. Great ! It a great tribute to your family and Grandpa.

Is it  possible, in the second pic of he sand blasting, that the tractor could shift and fall off that block - possible injuring your son ? I suspect the tractor is in gear - but, know there is movement when in gear, which could be enough to teeter off that block ?  Safety first - always access to ensure safety.

Thanks for sharing, great contribution.