Yes, this machine has been posted before. It really never caught on with folks because sergers typically use 3-5 threads for overcasting seams and or decorative serging. The strength of the locked threads keeps the fabric from unraveling and making a nice, finished seam. A two thread serger really isn't good for much! So, although neat, IMO rather useless. Now had they made the machine with a true serger-one with 4 or 5 thread capacity...that would be cool.