Report Speaking of Bending Irons... in The Pegbox Posted April 26, 2008 quote: Originally posted by: Andres Sender Matt--would yours take 20 minutes to heat up if you put it on 'maximum' for the time it took to heat up? I went through my journal and I had written that on 3.5 it took 20 minutes to heat up, then got too hot and I had to turn it down to about 2. I suspect it would work, as I can hear something inside the unit click periodically, and I believe this to be the heater being turned on and off. The higher the control setting the longer the cartridge would remain on, so it may very well heat up faster if set on Hi, but be careful. The instructions from Ibex state leaving it on Hi will damage the cartridge, so you would definately need to closely monitor it if you were to try it on Hi.