INSANELY HOT DIY Hot Air Soldering iron @ 15 Volts DC and 3.5 amps...PART II

Step 8 Make your own insulation washers.

Needed to make heaps of washers as I did not have any insulated solid tubing to get the result I wanted. Fiberglass sheets were good...be careful with this stuff as when you grind it with a dremmel, you are actually creating microscopic glass shards/powder. Wear a mask and gloves as this stuff makes you itch. These washers will help isolate the heating element from the main barrel. Here, I used a five cent piece as a template. The coin actually just fit inside the barrel of the scooter handle, so is the ideal size.