the main reason I use it,, rasp.. is cause I enjoy using it,, I dont really like the band saw,, I can tiller with it,, but like the rasp better, but as stated,, many good tools that work well,, its just me,, I can use a light touch and take very little wood, I like the long rasp as it helps me keep things even and not take off too much in one spot,, when I made bows professionally, I used belt sander and tube sander etc,, and it was faster,, but faster is not my objective now,, I enjoy the process,,, so rasp and knife for scraper,, are my tools for tiller,, not saying they are the best, just what I enjoy,, and thats why I make bows because I enjoy making them,, and it keeps it simple,,
once the stave is roughed out, I only need need 2 tools,, rasp,, and knife,,to tiller the bow,, I like simple,, and with the farriers rasp,, I only need one rasp,,
every one has their own method and preference, just like every guitar player has an insturment of favor,,the bow maker has tools that work best for him,, when the arrow hits the mark,,your process is a success,,