Thank you for the info peaceandjoy. I watched Lisa Callie's long video...she did demo ruler work on a 300 series machine! She just used the open toe and closed toe feet with bat grippers....never heard of these grippers before! Almost makes it look easy! Ha. I may give it a try....but those small practice sandwiches are oh-so-different than quilting a quilt! At least for me! Thanks again!