I wanted to make my work easier and faster - I got problems, slowdowns, and even my wife's hysteria. For understanding: I sewed lining on the frame from 2 sides of the wall - the first one with this "miracle" device turned out to be a little less than 3 hours, the second manually in 20 minutes . Do not waste your money and nerves - do not even consider buying this "miracle" of 2022-Chinese engineering.