Kye, that copper fuel line's s a cracker of an idea I might do that myself sometime it'll look a treat all polished up. Having a project with your dad is an investment in time. So much to learn about what works and what doesn't how to do things and how not to do things. My young bloke is 5 and already loves loitering in my garage and finding treasure.
Anyway back to that toe cuter, she'll be a ball tearer mate. You can refine many skills from welding to mechanical and fault finding. Best of luck mate and keep us posted.