Limit/home switches - how are you mounting 'em?

[HankMcSpank]

So I want to add some home switches to my new little CNC, but I'm a little stumped how these things are physically (& robustly) affixed to the machine.

For example...

http://www.ebay.co.uk/itm/CNC-LASER-...item230d0c5fb1

are the two small holes...mounting holes, or are theyjust holding the switch together?!!!

I pulled some similar switches from some old dot matrix printers, but I'm stumped for a way of mounting them...gluing seems very cack....these things shouldn't ever be able to either move or fall off, but whenever I see a pic of a limit/home swithc it never jumps out at me "aha...so that's how you mount them!"

Personally, I immediately thought of a chassis mount barrel type switch...ie drill a small hole in my gantry upright, pop the switch in...it ain't going nowhere then....but alas ....not seeing any....must be missing the point (I normally do!)