I also wonder a little at the limitations imposed by our ideas of sharpening with an equilateral triangular file.
This is the crazy saw I ripped a 5" thick "log" with. You can see the crazy gullet size (let alone the crazy gullet pattern)
I feel like that might speed things along a bit also.
Cheers,
Paul
https://www.woodworkforums.com/attach...2&d=1429009281