If the room is cold, and you work at a Desk and do you have cold hands — warm them, here is an unusual mini-fireplace, build which is not particularly difficult. You only need a curved polished metal sheet on a heat-resistant stand, and a bunch of tablets of dry alcohol, familiar to tourists and hunters.
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What only options are fixing the door in position by homebrew not tested! Here is another, perhaps the most accessible of the simplest. You will need only a small piece of sponge rubber...
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Somehow I had the need to cut a thin sheet of plastic. Due to its large size, use the hacksaw was impossible, but to cut just the canvas for a long time, and breaks it in his hands....
