Air powder polishing

We did air powder polishing. I didn't really like it. I don't know if I was getting the angles right. I really didn't like it being done on me. It tasted aweful and it stung my lips and tongue. It worked good though. Before we did it on each other we tried it on a penny; it made it really shiney. It was cool. When we were finished everything was covered with salt. It made a mess.