Instructables

Copper tape for thermal concentration

Has anyone ever used copper tape to concentrate heat on an object to obtain a uniform higher temperature?   I've been doing some studies in the recent past that suggest polished copper foil is a good reflector of infrared energy. It is not as good as silver, but I don't think it would go over well to use silver in any sort of oven or kiln.  I used to think good ole aluminum foil was good for heat, but it turns out it is only good for stopping heat.  I've thought of using the instructable on the waffle iron or make one by way of a bread toaster, but will most likely not be able to go through with it.  The copper foil is the same type found at stained glass craft shops. 

jmikronis (author) 1 year ago
Kiteman, I appreciate your comment. My question still remains, has anyone taken the polished copper film to do this? I did do a simple experiment using a regular clamp on light fixture. I lined the inner surface with this foil and was able to feel the heat from my own hand. I took this same unit outside to see if I could cause a stick to catch fire but it was taking too long for me. On a different thought on this same subject, using this same mirror to heat a piece of steel and see just how long it took to reach a certain temp. Copper being great at reflecting IR and steel being a good absorber if IR (water is also but takes more time to make a fixture for it in this small space).
Kiteman1 year ago
If you're wanting to concentrate heat by reflection, using a curved mirror to focus the Sun's energy on one spot, then the rule is "the shinier the better" - aluminium foil is actually very good if you lay it smoothly.