Machine shop woes.

Unfortunately a business owner that has family issues or has taken on more work than they can do acts just like a owner that is going out of business, they don’t deliver when promised and don’t call back. Since the guy did good work for you in the past I would call or show up and ask him for an explanation because you are concerned. Based on your gut feeling from that is how I would determine what I would do. Give the guy an opportunity to explain and or make it rite before bad mouthing him or burning your bridge with him. He could have had a death in the family or could be blowing you off.