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Step 3Making the tube 'body'
Cut a strip of paper 11" long, 1/4" wider than the length of the battery. Apply stick glue as you wrap it around the battery. This will be stiffen up the tube.
Use the widest battery you have as the template so that the tube is loose enough for the battery to be removed and replaced.
Set aside to dry while you assemble the circuit board.
Use the widest battery you have as the template so that the tube is loose enough for the battery to be removed and replaced.
Set aside to dry while you assemble the circuit board.
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