I know you may know this but... 1. are you using a zig sag or stretch stitch to sew it? this can help if the stretch is the issue. 2. do you have some tissue paper (like you wrap gifts with) or some very light paper around? If you put some on both sides (or just try it against the feed dogs instead of both if you don't have much) and then try sewing, that might help with the slippiness. The beauty is that when you tear away the paper after the seam is sewn, you should get to keep your stretchiness and the "hand" of the fabric.
A serger is not always the answer for such things. If you need more help, you can give me a call tomorrow (I will send you my phone number in e-mail) and we can puzzle it out if you'd like. I have a ton and a half of reference material that might give you seomething.
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1. are you using a zig sag or stretch stitch to sew it? this can help if the stretch is the issue.
2. do you have some tissue paper (like you wrap gifts with) or some very light paper around? If you put some on both sides (or just try it against the feed dogs instead of both if you don't have much) and then try sewing, that might help with the slippiness. The beauty is that when you tear away the paper after the seam is sewn, you should get to keep your stretchiness and the "hand" of the fabric.
A serger is not always the answer for such things. If you need more help, you can give me a call tomorrow (I will send you my phone number in e-mail) and we can puzzle it out if you'd like. I have a ton and a half of reference material that might give you seomething.