Square bay curtain issues grrr

[Drlouise00]

Can anyone help with our curtain dilemma? We've got these amazing massive windows - a square bay measuring 3 metres across with ornate cornicing directly above the windows architrave. The flipside of these wonderful windows is that if course that that are drafty and ideally need thermal lined curtains. But these are pretty heavy and we can't think of a way to fix a pole or rail securely enough. There's plaster at either side of the windows and right in the centre but nothing in the corners to fix to. Well, there's window moulding/architrave but I don't reckon this is strong enough. Any ideas? Help? !

The window frame will be strong enough to get a fixing if it runs all the way round (sounds like it might not, but be two windows?)

You then bracket the track/pole into the plaster beyond the end of the windows as it were so you can stack the curtains back and let the light in.

Track is hard in a square bay as it can't be bent right into the corner - so you may need to look at poles. Bay window poles will come with 'pass over' brackets and rings that are C rather than O so that they can pass over the brackets - but they never run that smoothly. But it may be your best option.