Spherical worm gear design animation - GIF

[Toolmaker51]

I agree. There are 'designers' who think just because it can be drawn, it'll work. That spherical gear form might be a manufacturing nightmare as well. Then at GIF close, they expect some kind of homage for 3 hours invested animating.
The glaring failure omits space or material for an axle, just to emphasize the diminishing lead and end of the worm. Pointless. The contributors name "CAD Knowledge" can be assaulted as well; spend 3 hours in Marks' Standard Handbook for Mechanical Engineers. First printed 1916, 11th edition 2006....unknown how long it took getting 1st edition written. How many programs have 11 edits just weeks after first release?

But an open mind also says, we'd be in a different position were it not for imaginative efforts. Even prototypes for safety pin or mousetrap took many tries; before tooling up in production.