Some may. I used to have one that would use 2 threads but it made a rolled hem that way. The one I have currently has to use all 4. But even if you only used 2 threads, they wrap around the edge of a fabric instead of being just one line of stitching and would make considerably more bulk than a normal seam.

I made a carol woods 6 hour quilt years ago (least I think that's the name). I made a crib size to see if I liked it. It's ok but it is the only one I made. Can't speak on any other.

Kaye Woods "6 Hour Quilt"

Thanks! I never get it right!

I made a disappearing 4 patch with my serger and loved doing it. There was not enough bulk in the seam to worry about to me. Was really fast. I do plan on doing more. Some patterns are not serger friendly, but others can be.

I attended an Eleanor Burns workshop where we made three different quilts. One was her braid quilt. We made it completely on the serger. Completely finished the top in one day. I quilted it on a longarm and had no problems what so ever. It was quick and the seams laid very nicely to one side.

I also attended a workshop taught by Eleanor Burns. We used a serger to piece a log cabin quilt. The pieces were precut for us, but the quilt top only took a few hours to sew. I still have the quilt top. The workshop was 10 years ago and I still haven't sandwiched or quilted it yet because I love looking at the nice, even, non fraying seams. I bought a serger at a garage sale in February and have plans to make my next quilt either a rail fence or lot cabin quilt using my serger.

I took a class years ago at my LQS. It was quilt as you go with a serger. I loved the fabrics I had chosen and really wish I had not used them for this class. Reasons were: no info or suggestions were made about the batting (and the one I chose was too stiff and heavy so made very thick seams), I was very much less than impressed with the instructor, no guidance was given for people who were less than comfortable with their sergers. All in all, the quilt was made, used as a bedspread because it was not comfortable to sleep under, and now languishes on a closet shelf.

I think it might be good for something like a t-shirt quilt tho.

This was my thought as well, but I've never used a serger on a quilt.

I might have to take a look at those videos and try this on some charity quilts. Like you said, no bobbin worries.