Wondering on your preferred heat source and why? Heat lamp, heat box or heat underneath?

Maybe I am dumb... Heat source for what?

You aren't dumb, AAtKT.  My first thought was, what the heck are you talking about?!  Sounds more like some that is using a heating pad than a cake decorator.

I notice this is posted in the catagory of "Sugar Work" soooo it must be someone who wants to make pulled &/or blown sugar items.  I certainly would help if there was more information.

I was also thinking about heat sources for reptiles... I own a corn snake... and that was where my brain went first...