Sounds like knife not against plate or backwards or something not aligned right?

I raise garlic, white onions, tomatoes jalapenos and bell peppers in the garden every year and my wife cans a chili mix that we use mostly for chili. Brown 1 1/2 bag of burger from meat processor add an envelope of chili seasoning, 1 quart of the chili mix and 2 to 3 cans of chili beans and chili is ready in less than 30 mins. We keep pot in fridge, I think it is a little mild but it provides a quick, easy, hot lunch many days.

I had that happen with summer sausage when i didn’t let it warm up enough before putting on smoker