I recently found myself faced with the task of sewing a dozen or so yards of quilt batting for an art project.
I cut some flat plastic sheet from a produce container and made what I’d call a ‘batting sole’. It goes under the normal foot of your sewing machine, like the sole of a shoe under your foot. Took me about a half hour to make the first one, and only 5 – 10 minutes to trace the pattern to make another. Worked like a charm – I could run 1″ batting through the machine like ordinary fabric. I expect this to scale well to thicker stuff.
The only trouble I got in to was when I had the machine set to a wide zig-zag and zero length – I did this to anchor a new stitch – and lay down enough horizontal layers of thread to create a lump. Then when I ran the foot over that, it pulled the batting sole, which bent and got dragged with the fabric under the needle and I sewed right through it – hence, making a second one.
Tools used: cutting wheel (optional), xacto blade, scissors.
Strangely, a google image search shows nothing similar. Nearest options are wheel-based gadgets.
The rear flap has a hole cut in it to accept the leg (?) of your machine. The side flaps have straight rear edges which press against the folded up rear flap – this is what prevents the sole from being dragged under the foot by the fabric.
