Is this a good or bad idea? I didn't do my windscreen or windows when I recently polished and waxed my car because I thought you'd need special glass stuff.
Minimal budget really, I thought waxing the windows might help with water run off in the rain?
The windscreen is pretty scratched too but I'm not sure I've got the arm power to polish them out!!
Waxing the windows will help rain run off. However, some people have experienced issues with waxes clouding the windscreen, which is obviously not something you want. There are therefore, as mentioned, specific window sealants.
With regards to polishing, no you won't be able to hand polish the scratches out. Again, there are specific glass polishes. AG Glass polish will be a good start, but for correction, you will need to look at machining. If it's that bad, I would just look at replacing the glass.