Bevel gears (parallel depth method)

[PixMan]

I can't understand why you would need to rotate and shift for multiple passes. Wouldn't you just take multiple depth passes, or do those gears require that offsetting method?

I've only made spiral bevel skew gears once in my life, and that was in my 3rd year of vocational high school. Guess I made the one set and forgot the lesson. Sorry.

Nice complicated setup and cool dividing head you got there!