I have a Sew Steady acrylic table with feet. I had it made for another machine. My Husband's friend cut the opening bigger to fit around the base of my Juki that didn't have an extension table with it. It sits on my sewing cabinet and works perfect for me. I have a 2'x4' folding table I sit to my left to hold the quilt, while I quilt it.
BTW the acrylic had to be cut with a water jet laser.