Is the CMCE040 soldering iron safe to use outdoors or in wet conditions?
No, this tool is recommended for indoor use only. Do not use the tool under wet conditions or in the presence of flammable liquids or gases. Additionally, flux fumes are toxic, so always work in a well-ventilated area. (Page 6)
From the official Craftsman CMCE040 Soldering Iron manual, page 6
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