Comments: - - In Gosport, England, there is a submarine museum. On display, they have a large bronze bevel gear, which belonged to a WW One submarine. This gear drove some vital piece of equipment ... I forget what the machinery was. A number of teeth were stripped from this bevel gear, and the result was the submarine was unable to surface. The submarine became stranded on the sea-bed. Artificers on board, drilled and tapped holes in the gear, in a similar way to what you have done. They then filed new teeth on the gear, such that the machinery was able to be put back into operation ... and the submarine was able to reach the surface. Talk about 'being under pressure'.

I used to repair window regulators like this back in the late 70’s. I also used to call it dentistry. I was about 18 and never heard of this technique. To me it just made sense. That’s the good thing about being a kid. At the time nobody I knew had used a mig welder. So it was brazing everything

Absolutely brilliant as a "field repair" which was driven by necessity. Faced with the circumstances of what he had before which was "totally fuck8d-up" he now has something which, with a bit of tweeking with a set of Swiss files and engineer's "marking blue", enables him to use the machine. Is the lathe going to be as good as new, obviously not, but with careful usage he can now do things with it that in it's previous state was impossible. Necessity is always the mother of invention. Greetings from the UK !.

This is awesome... I have been watching the Mechanics over in India repair gears by just welding metal on and reshaping. The thought had crossed my mind to drill and install dowels or something and then weld but haven't come across anything similar until now. Thank You for showing this technique.