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Thanks gm280. I only have a small soldering iron, and that wouldn't work. To clarify, do you use a butane torch and a stick of solder, or something else?
Yeah, I was a bit concerned about that as well, and then I compared this method to how domestic wiring is connected--copper cables are held in place with screws. Still, I think you need to be careful to squeeze the cable evenly along its length. I'll drop a multimeter on it and check the resistance, and post.
Compost Heating System
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