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Thank you for your chart. I built my hotwire cutter based on a youtube video. Based on your chart I expect the 12V 1.25 amp I hooked up to burn out rather quickly since I have a wire length of 24 inches. :)I tested it, it does work if i cut slowly..I see from your charts (if i am reading them correctly I should be using one at about 6 amps...I will be curious to see how soon this cheap adapter I had at home will last. Thanks to you I now have a method to estimate my power needs regardless of the size cutters I will make in the future. :)Many Thanks to you sir for thoughtfully providing these charts for people to use!