In this video Randy Child discusses the use of the rasp in shaping wood and demonstrates its use.
My apologies in advance for the noise. I filmed this in a production environment of which I had no control. That said, you can still hear the content which I believe is relevant.
PS – Check out my website for more videos and woodworking information.
-- www.craftedbytim.com - A Woodworking & Renovation Blog & www.craftedbytim.com - I make. You buy.