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Electric Vacuum Pen From Aquarium Air Pump.

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Step 21: The Pen.

This is the vacuum pen I made.

It's made using some pens I had around, a airflow control valve at the rear, an inflation needle at the tip and an alligator clip with some rubber glued onto it for the release valve.

The airflow valve in the rear is optional, but I like being able to adjust how much suction there is.
 
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