Used it for the first time the other day, tapered fades, trimmed glued linen from edges, and roughed out tip overlays, worked very well, just had to use a light touch and go slow. It wasn't much faster than the rasp, but saved me a lot of sweat. It trimmed the linen perfectly straight down the limb edges, then I used the double cut file to round back edges. Roughed out tip overlay tapers then again used file to finish. Saved time on bulk wood removal, which is good for me since I don't have a lot of free time to work on bows lately.