The summary is:
The video is about how to solder different metals using various types of gas burners, solders and fluxes. The author demonstrates several experiments with melting and soldering metals such as lead, aluminum, copper and steel. He also shows some tricks and tips for soldering thin and cracked metals. He compares the performance and price of different burners and solders. He also mentions a pottery master class he attended and invites the viewers to subscribe to his channel.
Here are the key facts extracted from the text:
1. The text is a transcript of a video about soldering metals with different burners and solders.
2. The author tested a household gas burner and a gasoline attack burner on metals such as lead, aluminum, copper, steel and gold.
3. The author found that the gasoline attack burner had more thermal power and could heat up larger metal objects faster than the household gas burner.
4. The author also experimented with different solders and fluxes for different metals and showed how they affect the quality and strength of the soldering.
5. The author demonstrated how to solder thin sheet metal of an aluminum can with HTC 2000 solder, which has a low melting point and does not require flux.
6. The author mentioned a pottery master class he attended and promoted his channel in the end of the video.