Whittle stick in shape of tapered cork plug.
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Christopher A. Young
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"KenK" wrote in message ...
Now to think of a way to block the other
tubes. Modelling clay or putty first comes to mind but I don't have any.
A quick consideration doesn't come up with anything else commonly
avaiable. Caulk too permanent. Ideas anyone?

If the tubes are soft, you can try to pinch them closed?

Small vise grips, hemostats...


Nope. Hard, brittle plastic.