As most adults should know, bench grinders with buffing wheels can be particulary dangerous. It is very difficult to express verbally how to safely use one. One must be careful not to catch the blade in the wheel. The larger the grinder, the more force it has to wrench the blade from your hand. I have a large buffer that I never use on knives for that reason. I always wear an apron and eye protection. I do not wear gloves. I have a very firm grip on the blade and handle at all times. I want to feel the heat. Forty-one years ago, I learned the basics in metal shop in high school. I never used that training until the last couple of years. There is risk involved in most activities, whether we recognize it or not. As far as becoming charged with static electricity, the high humidity here minimizes that. I would advise following the safety precautions that are inculded with all power equipment sold today. This is a knife forum. If you are not mature enough for this, go play video games.