I haven't read the whole thread, but it can be done. I have done all of mine (only six) on my regular sewing machine. Some were baby and lap quilts and a couple of twins; I did do my queen size too. Yes it can be a struggle - even more so if you use a lofty batting. I've used warm & natural is all of mine so I mostly had to deal with bulk from fabric. I rolled my sandwich very tight, worked from the center out and tried to work with the least amount of bulk in the throat.