It's very simple to take them apart.
They are held on with 4 tiny clips, two on each side. Use a very tiny flat head to release the clips a little at a time.
Once it's open, be very careful. There is metal pieces inside that make the switch work when you push the button. They sit loosely when there is no cover on the switch.
Good luck. This is a very time consuming job and requires alot of patience but the end result is beautiful.
