Short post, but I just had to link to this piece by Rob Pocaro over at Heartwood. It a quick read, but in short, the other good reason to have a sharp blade is accuracy. Accuracy in woodworking is often the source of amusing comments by the machinists I follow, but it remains the case that sometimes a few thousandths of an inch makes the difference between a nice, tight-fitting joint and…something else.
My favorite quote from the article:
Similarly, trying to shoot an accurate end grain edge with a dull blade is like trying to produce calligraphy with a crayon.– Rob Pocaro, http://www.rpwoodwork.com
As they say, “Sharp fixes everything.”