I removed an old noisy bathroom fan and the duct attached to it is just frayed. (If that's the word) I've tried cutting these ducts before and I just end up unraveling a bunch more than I should. That's actually the situation I find myself in.
I really don't want to replace this duct tube, it looks like a pain to go to the flashing and route a new tube. So the question is - can I still use this? and if so, how can I make the end of it acceptable for the out of the bathroom vent. Note the duct and the vent are both 3".