wrote
wrote
Harry Bloomfield wrote

If you ever think to buy a curtain track, which
comes rolled up - best avoid it like the plague.

Any curtain track which can be rolled up is insufficiently
rigid, even if you can remove the curve it will still bow
under the weight of anything more than tissue paper.

They don't actually, they're fine.

Presumably because they are asymmetric and aren't used with the
weight of the curtains on the axis in which they are rolled up.