With 40 grit this thing eats wood fast. Going down to 80 then 120 leaves wood very smooth and does it relatively quick. This beast is a work horse. Powerful so you better hang on when you pull the trigger. Dust collection works real well. Even better when I hooked it up to my dust collector. Kinda heavy but that works to your advantage. After using this beast for literally hours at one setting I highly recommend the Makita 9403.