Home/Lab made heating element?
I am trying to construct a heating element, preferably out of nichrome, for heating a small box (24 * 40 * 13 cc). The box is covered on all sides, so the heat dissipation from the box will be very low, as per estimate. I think a 12V supply would suffice for the nichrome wire. The only thing is, I need to maintain the box at an ambient temperature of about 38 degrees. Any thoughts on how I could go about constructing the heating element?