Best Answer:When just dripping the wax on to the board it doesn't matter, but when spreading the dripped wax across the base you want to use as little heat as possible. From what I've seen different types of wax will melt at different temps so having a variable control really helps speed up the process i.e. pre wax ,base prep and hot/cold wax ( wax with an ideal temperature zones for use) and micro speed wax . Now understand that you have metal in your base whether it's your core , the nuts for your binding screws, or your edges and these will expand and contract with heat which can damage your base over time and lead to a number of different problems. It is just another great reason to have a variable heat control iron. If you are just starting out it would behoove you to jump on youtube and watch a few videos to really understand what you are suppose to be doing. This iron has been amazing , It's durable I probably do about 30 boards a season for the past 2-3 years and it always works like a champ.
I usually go from 110 to 120.. That seems like a safe zone for me. Just go with what you feel, I prefer to take my time when I wax. If you see any smoke at all do not put that iron on your board, let it cool down a little.