I, too, have an extension for my machine -- a plexiglass one for my Pfaff. I have seen several threads on the QB of tables that DH, etc. have made a cutout in them so the machine sits flush with the surface. I've often thought about doing this, too. I'm so tired of wrestling with my quilts. They often get caught up on the corners of the extension table even though the corners are rounded. I long for a table where my machine would sit flush with the tabletop!! 8-)