Jim Matthews
I doubt any two turned burrs I burnish hold the same angle.

They're close enough at bench height that the ball joint handle can be adjusted.
Once I "find" the optimal angle for a substantial shaving, it works fast and leaves a shining finish. It's like a Stanley 80, only pulled.

I got continuous curls like Yuri Ganna videos show.

Not bad for $2 (plus a bench motor, arbor and buffing wheels).