Tootfinder

Am I too late for a #BikeNitePQ ?
My neighbor was complaining about squeaky disc breaks on his bike. I mentioned that I read you can use a high-grit sandpaper to sand the disc a bit and that might fix it... then I offered to help.
Does that work? Is it a good idea to try it?

@…: A #BikeNitePQ, maybe even works as poll:
What power source do you prefer for bicycle lighting and why?
Potential poll:
* Dynamo (hub, sidewall, etc.)
* USB (or other PSU) rechargeable batteries (built-in or in separate case)
* Exchang…