The kind that wraps around seems awfully tough in a crawlspace, do they make any in a tube that slides over the end?
i dont know about thosebut i do know how allunimun foil isdont trythere were huge sparks and when i opened it it lit on firepleasedont try it.
Paper.nothing unless it's dampCD, DVD or Aluminium.You'll probably destroy the Magnetron (the micro-wave generator)They will Arc badly with electrical discharges and could be very dangerous.
I dont know about paper, or cd/dvd, but alluminium foil gets tons of sparks and smoke appearsLike fireworksDont try it!
This is what happens.The waves agitate the molecules of the substance so that it vibrates.Because of this the molecules are constantly colliding with each other so heat is generated.This is also what happens when friction againts 2 bodies in contact generate heatFor exwhen you rub your hands together it wams upIt should be noted that certain substances could not be heated by the microwaveIt simply means that the vibration frequency of that substance did not resonate with the frequency of the microwavePaper -try a little 1 inch by 1 inch size it will heat upCD/DVD-also try a little pieceAlso you may set the timer to only one minuteNothing would happen that could make you afraid but you could feel if the disk would heat up a little or notThere are plastics which heat up in the microwave and there are others that don'tBut if the plastic contain food that boils then the plastic may melt due to the temperature of the foodaluminum foil-you could try with 1 half minute and standby to stop it if it sparksNothing much could happen in this time.
They make a insulation blanket that is foil like on the outside and fiber glass on the insideYou can purchase duct insulation at any major hardware storeYou warp it around the ducts and staple it closed and then use a foil tape to seal itMake sure your duct works is sealed tight and has no leaks in it before you wrap itYou have to cut it to make it fitMerry Christmas
