Here's a note from Bonnie Lyn McCaffery:
I have been having a great time experimenting with overlapping some of my DigiBobbE designs. What is DigiBobbE, you ask? It's digitized bobbin embroidery. I have designed 4 collections of designs made especially for bobbin embroidery with an embroidery machine (available at http://BonnieMcCaffery.com). They have been designed as continuous line designs that are done with a heavier thread like YLI Candlelight Yarn in the bobbin. You do have to adjust the bobbin case tension (it should pull smooth with a little resistance) and I highly recommend that you purchase a separate bobbin case just for bobbin embroidery. You don't want to be messing with the tension on your standard bobbin case. I always test on a fabric sample (right side down with stabilizer on top) before stitching on the real item - but I probably didn't have to tell you that. The fabric is loaded into the embroidery hoop with the right side down - remember the pretty stuff is going to happen with the bobbin thread - and a piece of firm tear-away stabilizer on top. Pull the bobbin thread to the top, stitch out the design leaving a 5" tail (you'll need to turn off the automatic thread cutter), and thread the tail through to the back for a nice clean finish.
I was wondering what would happen if after stitching one design (and threading the tail to the back) I moved the design just a couple "notches" to the right and stitched it again. Ooooooooo! (as my grandson would say). That looks pretty cool.
What if I stitched the first one with metallic thread, shifted the design a couple "notches" and then stitched the second one with the YLI Candlelight Yarn. That looks pretty neat.
And one more thought. Maybe I could use 3 different colors of YLI Candlelight Yarn and shift the design a couple "notches" each time. Oooooooooo! This is fun!