Being a hamfisted clot I have managed to push my fingers through the window frames when glazing the signalbox.

This means many more hours to be spent, again, with a magnifying glass, tweezers and little sections of minuscule platicard strip that stick to everything *but* the place you're trying to stick them, and which then "ping" off into the outer reaches never to be seen again just as at the 5th attempt you think you've finally managed to get the little swines in place.

Grrrrr.