[Tristan Lall]

Good work revising the design. Mind if I inquire about a few items?

Why did you put such a large radius on the gearbox plate corners? Anything more than a simple broken edge will require more machining effort. Big radii are good on inside corners when the stress concentrations matter due to the loads being transmitted through the plate. Only relatively rarely does that matter on an outside corner.

What does the output from this gearbox look like? Are the brackets going to be sufficient to take up any loads imposed by the things the gearbox connects to?

Do you need custom-bent brackets like those? Could you use a piece of angle, or maybe buy a bracket off the shelf that accomplishes the same purpose (e.g. from McMaster-Carr or a hardware store)?

What are the specs on the worm gear? How many starts (i.e. the helical teeth on the worm), material, angles, profile, etc.? Most critically, I'm interested in the efficiency of the worm gear—efficiency can vary enormously, depending on those parameters, and on the accuracy with which the gearset is assembled.

Are you using shaft collars? They're heavy, but can be good if you need fine adjustability. I'd generally prefer to use snap rings or shafts with fully-captured lightweight aluminum spacers (when thrust loads matter).