Wishbone 2 drill bit sharpener

I warn everyone the idea and development is not mine. There was no accurate tool for sharpening drills found on the site, everything that I tried had a bad sharpening geometry. This tool was found on YouTube, all questions to the creator. I share experience and file. I hope the translation is correct via google.

https://youtu.be/B6MtVCODEP4

As you can see in the photographs, after sharpening, the drill drills correctly, this can be seen from the metal shavings.