Contest

Hot Air Gun V. Tin Model

In the blue corner....

The Steinel hot air gun, with the optional 9mm diameter reduction nozzle. 
The intended use for this acquisition is for electronic surface mount technology repair / rework.

... and in the red corner....

The model is from a Warhammer tabletop war game set. Games range from small battles involving 20 or so models a side, up to massive battles containing hundreds of models. Rules that govern how the models move and fight are contained in rulebooks. Players build, paint, and collect armies of models that fit their individual playing style and personality.

Blue's winning 

Why the contest?

I am very wary of individuals that "war game". When I was a child, I spake as a child, I understood as a child, I thought as a child: but when I became a man, I put away childish things. Corinthians I 13:11

OK, I admit I had recently purchased this tin model. Yes, I had also built it up meticulously. (In defence I was occupying myself while some teenagers were building and painting theirs.)

I have purchased a new tool for electronic assembly, and I need to try it out. It was fate that I saw the model when unpacking my new tool. A tin model.

The melting point of tin is 231.93C, a bit hotter than 60/40 electrical solder that melts at 183C.

The meltdown

Anyway melting the model was fun! 

Solder composition eutectic point

63/37 solder composition, as opposed to 60/40 solder composition, is also known as the eutectic point of the alloy, where the alloy behaves like a pure metal having a single melting and solidification temperature 176C.

This is a good operational feature. Once the solder melts on application of heat, it solidifies immediately on removal of heat, without going through a pasty stage like other alloys.