Moving the inside layer of fabric out of the way, slip the cardboard circle into the opening of the tube. Pin the folded edge of the tube to the rim of the cardboard circle at even intervals, distributing fullness evenly all around the circle. (Remember that the side of the cardboard circle facing OUT now will end up INSIDE the thread catcher) With matching thread, make small whip stitched to secure the folded ed of the tube to the cardboard circle.
Turn the bottom through the hoop inside out. You have only sewn one side of the round piece of the bottom on at this point. Turn inside out.
Sew the remaining edge of the tube to the bottom edge of the cardboard circle. Fig 3
Sewn top first piece of the cardboard circle being sewn
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Fig 3
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