Ignoramus31471 wrote:
I have a particular rotary switch with an about 2mm thick stem. It is
made of some sort of steel. The stem on it is broken. It is an 11
position switch, kinda hard to find although I have seen 11 position
rotary switches (whose positions do not match the markings on the
device).

I would like to know if there is a simple way of mending that
switch. Maybe silver brazing or using some sort of a drill and tap
mini screw with loktite. Any thoughts on this?

The switch stem may be a simple D section, and in some designs of switch,
could be replaced.