when I first purchase this I was very skeptical because it was used and it had a lot of issues when I first powered up to try to embroider anything. These high-tech machines are very very touchy and every little bit of detail has to be followed in order for it to work. if the bobbin isn't correct it doesn't work if something's not threatened exactly perfectly it won't work so many different factors including them to use for the backing and the spray is very important.
the cell are purchases from was very very helpful and I did a lot more research in order to make sure it operated properly.