I have an older Tin Lizzie and there's no problem doing a king length. I like my machine a lot, but wish I had a nicer frame. I've used a friend's set up. She has a dead bar and I can really see the advantages. Her frame is also steel, with solid rollers which are very sturdy. Mine is aluminum and has a join in the middle that flexes a bit. Of course, her frame cost 3X what mine did. I only quilt for myself and a few relatives so my frame, although not top of the line, still works just fine.