I am using 100% rayon embroid. thread. It did not take me long to figure out about the stabilizer. (I wasn't sure if it was all fabrics or just the ones I tried to use.) But I also figured out that the bobbin thread must be different. I used the emb. thread and had a mess. I switched to the thread they sent with the machine & had much better success. Do I have to use what they sent & find more, or is there a particular type that I can purchase locally? I finally completed 1 project that I was not ashamed of last night. Also, if you don't mind sharing, are there any tricks for the automatic threader? Mine worked fine, then I broke a needle. Since then it has not worked. I appreciate any help you can offer. Or if you have any websites that share tips. Thanks so much for responding.