I am new-ish to sewing and do so purely on a practical/utilitarian basis (e.g. patching an old pair of jeans so I don't have to buy a new pair).
I have a lot of old cotton t-shirts I'd like to repurpose, including using pieces to patch over holes of current use t-shirts as well as cutting the old one into 6" x 6" (or so) squares and sewing them together for some handy double-layered cleaning, wiping, polishing, and/or (wood) staining pads.
But the sewing machine I use -- Babylock Zest -- seems to not want to perform this (what I would have thought was a) pretty basic sewing task...the thread keeps getting all bound up, generally below deck in and around the bobbin area. I have asked a few people and gotten comments like "your bobbin's messed up" (it's not...it works just fine on pretty much any other fabric) or "you're using the wrong thread" (it's just basic, standard cotton thread, so...?) or other comments that just don't track with my experience with sewing and this particular machine.
I've read that it may be the material itself, although it is just standard cotton t-shirt fabric, but apparently it is (might be) a "knit". So my question is does this explanation make sense? i.e. Can a fabric so basic and ubiquitous as a t-shirt create issues when trying to sew it together to another one?