So I'm tinkering around with running 2 1500W heat sticks as possibly being my new boil system and I'm running into a mental block around controlling heat output once I get to the boil. I only have 120v in my garage and I'll just use two circuits but with the way I have it right now they are on/off and I suspect I will overboil with that configuration. Google has not been my friend on this but I'm wondering if I were to wire something like a dimmer switch into one of the elements I could then dial the heat in more precisely, has anyone tried something like that? Obviously a Robobrew or Grainfather already has the controller built in, but since I'm Jerry rigging this I am trying to think of a reasonably simple way for me to maintain a boil. Thoughts?