I've just read a study that suggests many people re-use needles, with virtually no risk of infection, despite the recommendation for one-time use. According to the article many people use them three times. I have no position on this, but I am wondering how many people re-use needles, and how many times, and if they sharpen them, and if so, how. The study suggested using alcohol was not appropriate before re-use because it washed off the silicone lubricant.