Knife Making Angle Grinding Tool - Let's Figure This Out

For my next knife I want to be able to have the same grind line on both sides of the knife.

I saw this tool on the Simple Little Life YouTube Channel and wanted to try and make it myself.

https://www.youtube.com/c/SimplelittlelifeCa

https://www.youtube.com/watch?v=gM5RZx2EKg0