I have never had a need to raise temp. Once I hit my strike temp I dough in, add the grains, stir down to my desired temp, pop on the lid and walk away. I mash in my SS brew kettle with no insulation whatsoever.
>>If you use a Voille bag you'll be fine. The paint strainer bag are the ones that scorch. This was proved by a guy who has an electric BIAB setup. He took some Voille material leftover from making his grain bag and tied it directly onto the element, and set it on high for like 15 minutes. Let the water cool pulled the material out and it was fine.
I'm willing to try this, if you will replace my Wilser bag in case it gets damaged.
Well someone already tried it, and proved it, but your not convinced, why would you believe me lol