Quilt Wall Hanging Frame

My wife made a quilted artwork piece several years ago but we had no easy way to display it. Picture frames can be used but it is difficult to properly stretch a quilt inside a frame and most of them are quite ugly. So my wife challenged me to design a 3D printed frame that would enhance her quilt and would be simple to make. I also had the requirement that it had to fit on my 6 inch square 3D print table.

So I designed a rounded outer frame that is exactly 6 inches tall and slightly less wide. Luckily this matched the quilt she had made quite nicely. I made it deep enough so that there was room to handle the batting material in the quilt.

I then designed an inner frame that the quilt stretches over. There is a 1.5mm gap to the outer frame so that the quilt will be "pinched" between the inner and outer frame thus stretching the artwork. It also has a mounting post at one end to allow it to be hung on a wall nail.

The quilt has an upper and lower fabric layer with batt