DIY Hot Air Soldering Iron

Step 5 Put the aquarium tubing in the handle of the soldering iron

I used a dremel tool to put a hole in the handle of the soldering iron, near the top. The hole the power cord went through was not quite large enough to accomodate both the power cord and the aquarium tubing. Your results may vary.
This shows the tubing through the hole I created in the soldering iron. The placement of this hole actually seems superior to running the line straight out the back of the iron. The air flow can be crudely regulated with a little bit of pressure, pinching the air hose against the handle.