Cast Iron skillet help

[smokeyandthebandit05]

Originally Posted by Wharf Rat

I'm an appliance engineer and used to work for a company that made glass cooktops. We recommended not using normal steel cookware because it might scratch the surface. But, our home economist tested for scratching with cast iron and could not confirm any scratching. I used Lodge frypans for several years on my glass top without problems. I was careful not to slide it around. Bob

Roughly how hot do range tops get?