How to prevent the derailleur cable fibres getting all over the places? My bike is only 7 months old, but the front derailleur cable fibres are becoming loose i.e. the individual thin metal fibres twised together to form the cable are loosing out. I think I have lost the metal cap which was holding the twisted end of the cable so that those fibres stay twisted. How can I fix this? Could anyone suggest?

TA
You can buy cable caps separately, they're actually meant to be crimped on so you can fix them with a crimper or pliers.

I know Park tools do something which is basically a really sharp wire cutter, should prevent fraying in the first place. This tool is showing on their site now but I have one (bought many years ago) which looks a bit different.

You shouldn't need to resort to duct tape!