Thor, or should that be Zeus?

[m_c]

But you cannot go wrong with Cherry or Happ microswitches, high repeat-ability and guaranteed for 10 million clicks which should be good for a few weeks lol. Should cost ~£1 to £1.50 a switch which for cnc is refreshing lol.

You should be aware that mechanical switches often have a minimum switching current needed for those kind of expected lifespans. If switch contacts don't switch enough current, they oxidise and fail to conduct, as they rely on a certain amount of arcing to keep the contacts conducting.

The same also applies to relay contacts.