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Com: Sam Waldon : Goodness! A guy spends a day of his time filming a video to be instructive and maybe even keep one of you from killing yourself... and all you can do is dis the guy? Did you grow up attending a school that taught you to hate and criticize? Maybe you never heard that old saying "If you don't have anything nice to say, don't say anything at all!"

Com: Rick : I have been cutting trees for 25 years. while doing so I have pinched my blades, bent three chain bars, and watched two friends hurt themselves.  I wish I would have saw this 25 years ago so I would have known what I was doing wrong.  You fellas who are badmouthing the video have probably done the same. 

This is the knowledge and safety basis to work from and yes he probably had a dull blade on purpose.  I bet this fella could probably whip your behinds cutting trees when the cameras are off.  Don't be arrogant morons.