Man vs. Utility Blade

We noticed this fall that four of our windows had failed (i.e., they were foggy). The company paid for the windows but not delivery so this hand husband decided to do it himslef. The first one went pretty well but on the curved one in Tessa's room the e blade he was using o remove the window broke and cut his wrist.  I didn't even know how bad it was because it was bleeding so badly that every time I lifted the two the blood poured everywhere.

He still replaced the window the next weekend.