A hot box doesn't have to be to fancy I use 2 clip on shop lights from Harbor freight with 200 watt bulbs and a electric blanket tent and cure at 140 Deg for 5 hrs that simple set up will go over 200 Deg if I don't vent , I have a small shop and not much room for a hot box ! I have friends that have room temp cured smooth on with no issues for 1000s of arrows , I never leave my bows in a hot car , but leave one in a freezing car for back up hunting....lol