The 930 machine is larger but I think the place that the table slides on is the same as that of the 830. I had an 830, sold it and bought the 930. It was hit by lightning. I have a chance to buy an 830 at a good price, but there is no table or attachments with it. I know my attachments will fit it and I'm hoping the table will. If it does I will buy the 830.