I finished a bow some days ago, for the two-tool-make a bow exersice on paleoplanet, with a rasp and a hatchet. If you cant scrape with your hatchet, your bow will look ugly, but it can be a great performer.
a great basic toolset includes:
a scraper, a hatchet, a rasp and/or a spokeshave, and chainsaw files.
the rasp or spokeshave is for rough tillering, or tillering out. The good thing about the rasp is you don't need a vise or shaving horse, and it's better for making fades on rigid-handle bows.
I prefer the spokeshave for tillering and roughing out tho, quicker, easier, leaves no ugly marks, removes the wood more even, but I use it on a (crude) shaving horse, and it's hard to use it without such a thing. It's my favorite tool though
greetings,
Nick