So I conducted a test using 3 types of thermometers and in conclusion using 3 types of .19 to .23 builds I had an increase of 8 degrees on 2 different hot springs at the highest test running
coils for 5 to even 10 second button presses using 30 amp batteries using the lowest ohm in that test. 5 degrees at the low end. Not enough to even flinch at danger. Mod maintenance, common sense, battery knowledge and no-alox all apply. All coils were wicked and juiced btw. And I'm fairly certain the heat was just from the mod difusing heat from the atty.