I just had a rear tire puncture a few days ago due to a piece of broken nail. In the end I didn't patch the tire, I just put in a new one. The nail had gone all the way through and put holes on both side of the inner tube. I just didn't feel it was worth the time and energy to repair something like that. I will keep the old tube for DIY projects though. Like cutting it up for patches or using sections of it to protect the bike.
The main question that I had was that the patch kit I had only had the metal rasp and no sandpaper. What type of sandpaper would work well on feathering and preparing an inner tube for a glue on patch. One of the holes on my tube was right next to a ridge and I had never been able to get those smoothed out well with the metal rasps. Often time I damage the tires further. What grit sandpaper works well and should I get?
Thanks all in advance.