i had a small group of ladies who would come to my house to quilt. i put out 2 or 3 machines that i had. one machine was a jc penney's machine. in excellent shape. i say excellent, because i have not used it. anyway, this new gal came to sew. went to use the machine and kept pushing and pushing. finally i said to her what are you doin. she was trying to change the stitch pattern, couldnt and was forcing the button. well there was another button you needed to hold at the same time. anyway, she broke the machine. i brought it to a mechanic. he could not repair it. so i am out of a heavy duty machine that i started to use again. moral of the story, even in your own house stuff can happen