I have generally only FMQ's smaller projects on my Janome 6600 and the length of time depends on each project (i.e. table runner, crib, lap etc.) Sometimes I add more detail to a particular project than I might on another. I recently purchased the 8900 and am anxious to try a larger project. Otherwise, I have rented a long arm at my LQS to complete Queen and king size quilts, however, since I am limited on time (usually 3-4 hours) I do not get the opportunity to be as creative as I'd like. Sigh... a long arm is definitely on my wish list.