Our house is a rag-tag mixture of very old, not-so-old, and fairly new - two of the doors are probably early 1900's and have glass panels which are heavily faceted - if you run your fingers along, it's raised on one side in a nubbly pattern of diamond shapes, like decorative pressed glass (the other side is smooth).
Thing is, it's an absolute devil to clean. Because of various building works (don't ask ) the glass has got the odd obvious paint-splash on, which I've discovered can be removed by very patient scraping away....but the rest of it is cloudy in places as though it's had dust or paint on it in the past and been wiped off, but not very well. Whatever I've tried - including sugar-soap with very hot water, a nail-brush, and plastic scouring pads - I just can't clean it all off. The cloudiness is still there and irritates the heck out of me (silly, I know, but it's a useful displacement technique enabling me to ignore the far more horrendous major building disruptions).
Help! Any ideas?