That video was complete poo. Lol.
It features terrible angles and some of what I was doing was off camera.
This video was me making my most basic model, so there are other process I use for more complicated models.
Here I use a 1/2" flat end scraper and a 1/4" spindle gouge.
The four holes help the yoyo to return and regen properly. It also helps translate the power of your throw into spin.