I just took a quilt off my Pennywinkle frame, that I used my 6600 to tack, didn't quilt cause it was a demin quilt a lady had put together, never sewed or quilted before, used 2" blocks, didn't want to have to put my quilting machine through the seams and this managed the quilt bulk and backing the machine did beautifully and would have had no problem quilting I am sure other than having to watch the bulk as I rolled it on the take up bar. I LOVE MY 6600!!!!