Brounds24, no offense, but you definitely don't have the electrical know-how to build something like this safely. You could literally inure or kill yourself or someone else. Your best bet if you're trying to save money is to offer an electrician a case of homebrew to help you out.
Not for nothing, but there's a reason that things like ranges and heaters have expensive UL listings and funny-looking wires attached to them. You're attaching a heating element to the side of a kettle which will presumably approach 200F. NEC Table 310.15(B)(16) clearly shows that even THHN or...