Originally Posted by
Snooze2978
Serger threads are about the only ones I know never to use as they are weaker than most threads. Maybe that's why they use 3-8 threads at a time.
Serger threads aren't as weak as one might think. I've even made FSL on my embroidery machine with it, I just slow it down and use a larger needle and no breaking thread. The reason sergers use more than one thread is fist of all, there are no bobbins the wind, instead one or two of the spools go thru loopers to complete the stitch with the needle(s). All of the other spools of thread are used depending on what stitch or technique you are using. Mine does chain stitching and overlock plus lots of deroative stitching. I personally use cotton thread to quilt with especially if its a quilt that I want to last a long time because it won't cut thru the cotton fabric. I do agree, I would not use rayon thread due to the strength and also it doesn't hold up as well for washings or high heat, like ironning.