Tony Foale has a build on this site for a vertical bandsaw that used moped wheels: https://www.homemadetools.net/homema...ical-bandsaw-5

Mattias Wandel has several home-made bandsaw builds; the wheels are made of laminated plywood trued up (and crowned) via a makeshift lathe https://woodgears.ca/bandsaw/homemade1.html If plywood's good enough for a Mosquito, it's good enuf for a bandsaw

I think you kind of took the really hard route.