I know it's different but I was running a mulcher today shredding brush piles with stumps. There was some lumber in there... a piece shot out like an arrow and went between the cab and the machine frame. Missed my knee by a few inches. Was sticking inside my cab by about 4 to 5 inches and sticking outside the cab about 8 inches. It was a piece of 2x4 or similar. Went through the foam "gasket" that seals the cab. Was wedged so tight that I had to undo cab bolts to get it out. Even with 12" water pipe pliers, I couldn't budge it. So, that is proof at how fast things can go from normal to dangerous.