Disagreement with a friend

Once upon a time, my friend and I were in an argument about whether how I was making my boofer weapons. Boffer weapons are medieval weapons made out of PVC pipe, foam and duck tape. My friend and I were arguing about whether mine that I made were safe or not. I thought they were just fine, but sometimes accidents happen. My friend said I didn't have enough foam on them to cushion the blow. This argument went on and on, and soon it ended because my friend couldn't take anymore of the argument. I then said to him that he needed to learn to take risks. My friend is still angry for the way I make my weapons, but we work around it. I hope this won't do anything big to our friendship.