Stihl Hexa filed Round. Is the shape better? 

Great little vid. Nice to see cuts that make for a fair comparison, thank you. So, no significant difference in your test. I've seen a couple of vids showing freshly ground full chisel is slightly faster than Hexa out of the box. I assume you're aware that _"Chainsaw Users"_ has found Stihl Hexa a little faster in Iron Bark, i.e. very hard wood. It seems the Hexa angles give an advantage in very hard woods but even with your conservative round file angles a regular full chisel with round file was sufficient to match Hexa with a powerful saw. It seems the main advantage of Hexa is for ease of getting angles that work well across the board (and Stihl gets to sell plenty of files.) Hexa is an elegant way of simplifying sharpening, I love the knowledge and thought in it. Many go through a long learning process before they can get chain durably sharp - I did. Hexa eliminates that process and chainsawing with a durably sharp chain takes using chainsaws to a much more satisfying place - it's a game changer. Thanks again for the vid Cheers sincerely d

Did you use a progressive depth gauges on both chains before the test

What did you mean by that dramatic shape change? Round filing of Hexa?