the method is really important as my interest goes up with how easy it will be to build a pint sized heat/ death ray out of the thing.
Not sure about the potential for a death ray from our design, however there is a heating flask with a heating element which could work, it needs to be plugged in so your range would be limited.
Not sure about the potential for a death ray from our design, however there is a heating flask with a heating element which could work, it needs to be plugged in so your range would be limited.