Made this to easily make coils for my kanger tanks, i wrap the wire at the top, then im able to tightly wind it on the bottom without having to use tweezers or pliers to hold the "spring" together while blow torching, etc etc, the metal posts are just tiny drill bits i hammered into the wood, i used a 2.4mm drill bit to wrap for my 3mm silica wire and it works out beautifully!
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