When I was cutting a piece of wood with an electric saw, the blade hit something hard, broke, then a piece of it bounced back and got stuck in my face.
この場合、次のような言い方ができますよ。
ーWhen I was cutting a piece of wood with an electric saw, the blade hit something hard, broke, then a piece of it bounced back and got stuck in my face.
「電動ノコギリで木を切っていたら、刃が何か硬いものに当たって折れ、刃が跳ね返って顔に刺さった」
an electric saw「電動ノコギリ」
blade 「刃」
to bounce back「跳ね返る」
to get stuck in my face「顔に刺さる」
ご参考まで！
カナダ 
