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Step 5Plugging up the shaft
The end of the shaft must be blocked off, so that the only escape for the air is through the tiny holes we've just drilled.
I found that a tiny screw works best, so you'll need to hunt for the perfect screw. The head of the screw MUST be very slightly larger than the shaft itself. The screw must also be very short (we don't want to obstruct the holes). I found the perfect screw inside a dead clock-radio - - old electronic components are a great source of tiny screws!
Drop a bit of super glue onto the screw and turn it in to the end of the tube. If the screw is a bit too small for the tube, you could very carefully crimp the tube a bit with pliers. Then the screw should be a tighter fit.
I found that a tiny screw works best, so you'll need to hunt for the perfect screw. The head of the screw MUST be very slightly larger than the shaft itself. The screw must also be very short (we don't want to obstruct the holes). I found the perfect screw inside a dead clock-radio - - old electronic components are a great source of tiny screws!
Drop a bit of super glue onto the screw and turn it in to the end of the tube. If the screw is a bit too small for the tube, you could very carefully crimp the tube a bit with pliers. Then the screw should be a tighter fit.
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