X Carve went crazy

So, I was doing some last minute Christmas gifts and the first one went as planned, ( with the exception my wife said it should have been stained however there is a questions as weather or not she said that). So, today I got up early and started it again. I did notice when I was cutting the she same file the depth had changed from 1/8 to 1/2. I let if finish the rough pass at 1/2 and reset the detail pass as 1/8. Of a 6 1/2 hour detail pass I had just under three hours left. As i was preparing Christmas eve dinner, I noticed some large sounds that were unusual. When I went to check on it, I noticed the x carve was going crazy. hit the E stop and turned the machine off.

I have attached a copy of the photos. Your help and knowledge is appreciated!



I am going to say your machine may have lost some steps somewhere.