This video filmed on my old Samsung phone (a5 2016). And this the last attempt to make video of this quality in this setup. https://www.patreon.com/andyfrol - Maybe with your support I can afford a simple camera.
https://www.etsy.com/shop/andyfrol
The unique design of the cooler. Smoke passes through all these intricately intertwined holes, cools and condenses oil and harmful compounds on the walls of the cooler. This allows you to increase the time between pipe cleaning. Instead, you can just cleaning the cooler, and since it is one piece of silver, without solder, you can just heat it to the temperature when all the dirt is burned and used immediately after its cool enough to put it back to pipe.
Video about pipe heating. Its another pipe but similar weight and similar heating. Temperature went up to 36.5°C=97.7°F
And about safe smoke with silver pipe. The short version - its safe. Now you can find three type of studies about evil silver. One about big industrial manufacture, another about drinking dissolved silver and last about nanomaterials with silver. None of this is our case. Counterweight we have a thousands years using silver in food making and eating, in surgery including modern brain surgery. All we have here its one piece of solid silver molecular lattice, and 300 Celsiym from lighter not enough to tear off enough molecules to somehow affect the safety of smoking weed. But enough to give a sense of pleasure :)