20041123-allegro-03-makingstopper:
To make the balsa "stoppers" in the ends of the tube, I slightly sharpened the rim of the piece of tube that stuck out, and gently cut out a disc of 1/8" balsa. Then I took that disc out and put it in the other end of the tube, and used the blunt end of an exacto knife handle to get it straight and flush.
20041123-allegro-03-makingstopper:
To make the balsa "stoppers" in the ends of the tube, I slightly sharpened the rim of the piece of tube that stuck out, and gently cut out a disc of 1/8" balsa. Then I took that disc out and put it in the other end of the tube, and used the blunt end of an exacto knife handle to get it straight and flush.