Thanks all! I had a great time building it. The box is 10x7.5x2 inches. It is one of the best sounding instruments I have made to date and I credit the achihua for most of that. I am going to miss it as it is going off to its new owner soon.
Here is a picture. There is a tail piece that the strings go into. I use an 1/8 bit to drill string holes in the tail piece and then protect them with 1/8" eyelets on either side. The string is tied around a glass bead to keep it from slipping through the hole.