Part of the fun of the AWANA Grand Prix is working with the kids. Some dads do all the work but I prefer to have the kids do as much as possible. I keep them away from the power tools and knives but the job of sanding is all theirs. Staple the paper to a couple pieces of scrap wood and send them off. I tell them to sand until they're happy with it. The girl has sanded her car for a week. It's SMOOTH.
This is the rough cut shape partway through the sanding process.
The boy's won't be so smooth since he has less patience :)