我用丙烷火炬和酱油潘并在这样做，我没有得到足够的热焊或一致，而且我也没有预热模具。
I used a propane torch and a sauce pan and in doing so, I didn't get the solder hot enough or consistent throughout, and I also didn't preheat the mold.
燃料的火炬，是丙烷，这是一种常见的燃料，也与以低廉的价格。
The fuel of the torch is propane, which is a common fuel which also comes with a low price.
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