Return to Pencil Roving
To prepare the roving for each thrum, gently pull the pencil roving apart in 3" segments. Split each 3" roving segment into halves or thirds lengthwise, depending on desired thickness. While this doesn't seem like much wool for each tuft, it is enough to give the mitten a fluffy layer with enough room left inside for a hand. The thrum should be about the same thickness as the yarn used.
The thrum is knit into the mitten as follows: On a knit stitch, insert the right needle into the stitch which will have the tuft. Fold the 3" lock in half and loop it around the right needle. Then wrap the yarn around the right needle and draw them both together through the knit stitch.
Give the ends of the thrum lock a little tug so it lies snuggly in place. When working the next round, knit the stitch and thrum together through the back loop. Depending on the pattern, add a tuft about every 4-6 stitches and about every 4-6 rows for the entire mitten body.
These thrum mittens are Fana Mittens from Folk Mittens by Marcia Lewandowski. Having a checkerboard cuff with no fleece, these mittens have white tufts of roving along the blue stripes of the mitten.