FIrst I used the plastic cover from a nut can.  I cut off the rim and then cut the lid to match the size of the bobbin end.  Then I cut a line across the radius and a small circle the size of the inside rod of the bobbin.

To demonstrate the technique, I spun dark Blue Faced Leicester on one half of the bobbin.  I then spun light Blue Faced Leicester on the same bobbin.

I then plyed the two yarns from one bobbin onto a second bobbin.

Tropical Twister

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