This Old Tube - Part 3
Once the hole has been made in the bottom of the tube, I used a mixture of water and Alcohol to clean out and of the residue from drilling the hole in the bottom of the tube.
Once the inside of the tube is clean, and you have dried the inner workings of the tube, you can now move forward with placing a small light bulb up through the center of the tube, allowing it to appear as though it is functioning as it was originally designed for.
Make sure the tube is completly dry inside before placing any heat within the tube. I used compressed air to clear the tube of any remaining alcohol.