I have an old 40" crosscut saw, champion tooth. I had it sharpened and tried out on a 38" inch across oak log. I was there 4 hours sawing and sawing and sawing, and barely got half way through. My shoulders are sore. I was determined not to leave until I got it, but it wore me out, that's hard work! I had the saw sent off and professionally sharpened. It is a Warranted Superior brand, flat ground, champion tooth saw. I am not familiar with these tools. I have seen pics online of waste noodles from these saws, not sure of the tooth pattern. My saw creates a fine sawdust. I will go back in a few days, after recovery to try and finish off the cut. Is it the sharpening method or the tooth pattern, should it take all day to cut through a big log? This was an Ebay item, I don't know it's history. The teeth are longer than they are wide, don't appear to over filed. Wondering if this is the difference between paying sharpening services of $5 a foot or $40 an hour shop time. I did chip the bark, so that is not an issue. Of course I expect hand sawing a 3 foot log to be hard work, but 4 hours, and not finishing? Wondering how long it should take with a good saw. You can see the handle of the saw in the log, on the other side, just a bit of the saw is sticking out, about the height as the red lights.