I apologize if this has been asked and answered - could not find!
I have very fussy feet - I am especially sensitive under the balls of my toes. Thus, I really like/need a layer of soft-ish padding as a top layer of my insoles. This would typically be a 3.2 mm or 1.6 mm fabric-faced polyurethane/Poron TM layer. I can get into details how I do that, but this is irrelevant to this topic.
So, two (a bit contradictory) questions:
- Instead of the "standard way" of installing the heater, by gluing it to the top surface and laying the cambrelle cover over it, how bad will it be if I tuck the heater under the top layer of 1.6 or 3.2 mm polyurethane padding? Will I squander too much of the heat and render it ineffective?
- At the other extreme: If I place the heater on the top of the insole, as per the standard instructions, can I forgo the cambrelle cover entirely? Has anyone tried that? Will it keep catching my socks once it's "baked in"? Or will it be too hot?