BillWest,
It looks like it would only work on small wall hangings or QAYG projects. Have you been able to use the rulers with a regular bed quilt? How did they work? Did you have to use a super thin batting? I am trying to imagine, but I own a 350 & I can barely fit half a lap quilt in the harp & still FMQ. At times, I have the quilt overlapping my right hand to make enough space for me to hold the quilt. For sure, limited harp space is the worst feature about Berninas.