Personally I adopt this method: I remove the protective cylinder, and insert a small plastic insert into the upper fan which prevents the fan from turning and getting damaged. (It must not turn by the compressed air; the circuit would fail). Then I blow the whole Mac with the compressor starting from the sides and going down, still blowing from the bottom upwards. Then I also pass internally to the cylinder, especially in the upper part where there is the upper curvature. In case the dust does not go away, I use a very soft, clean cloth. The air must obviously be as dry as possible and free from dirt. If you need to pass a soft brush in the most internal and not reachable points. [br]
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Unfortunately, the translation from Italian suffers from the lack of technical details. I recommend using a brush only in the upper areas of the fan, and only if the powder has stuck well to the plastic. Pay close attention to electronic parts that ONLY NEED TO BE BLOWN WITH AIR. Put your Mac lying on a large, clean and soft cloth. So you can rotate it to blow it all around. It would be perfect if you could use a semicircular piece of expanded polystyrene, with an inner radius large enough to accommodate the 22cm of the Mac Pro. For example, you could look for a polyurethane cubiera, to make concrete specimens, construction engineers use it, cut in half vertically, and with two holes of R.7cm, in order to obtain a semicircular support to support the Mac Pro.
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Remember that the cleaner it is THE GREATER THE COOLING
Personally I adopt this method: I remove the protective cylinder, and insert a small plastic insert into the upper fan which prevents the fan from turning and getting damaged. (It must not turn by the compressed air; the circuit would fail). Then I blow the whole Mac with the compressor starting from the sides and going down, still blowing from the bottom upwards. Then I also pass internally to the cylinder, especially in the upper part where there is the upper curvature. In case the dust does not go away, I use a very soft, clean cloth. The air must obviously be as dry as possible and free from dirt. If you need to pass a soft brush in the most internal and not reachable points.
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Personally I adopt this method: I remove the protective cylinder, and insert a small plastic insert into the upper fan which prevents the fan from turning and getting damaged. (It must not turn by the compressed air; the circuit would fail). Then I blow the whole Mac with the compressor starting from the sides and going down, still blowing from the bottom upwards. Then I also pass internally to the cylinder, especially in the upper part where there is the upper curvature. In case the dust does not go away, I use a very soft, clean cloth. The air must obviously be as dry as possible and free from dirt. If you need to pass a soft brush in the most internal and not reachable points. [br]
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Unfortunately, the translation from Italian suffers from the lack of technical details. I recommend using a brush only in the upper areas of the fan, and only if the powder has stuck well to the plastic. Pay close attention to electronic parts that ONLY NEED TO BE BLOWN WITH AIR. Put your Mac lying on a large, clean and soft cloth. So you can rotate it to blow it all around. It would be perfect if you could use a semicircular piece of expanded polystyrene, with an inner radius large enough to accommodate the 22cm of the Mac Pro. For example, you could look for a polyurethane cubiera, to make concrete specimens, construction engineers use it, cut in half vertically, and with two holes of R.7cm, in order to obtain a semicircular support to support the Mac Pro.
Personally I adopt this method: I remove the protective cylinder, and insert a small plastic insert into the upper fan which prevents the fan from turning and getting damaged. (It must not turn by the compressed air; the circuit would fail). Then I blow the whole Mac with the compressor starting from the sides and going down, still blowing from the bottom upwards. Then I also pass internally to the cylinder, especially in the upper part where there is the upper curvature. In case the dust does not go away, I use a very soft, clean cloth. The air must obviously be as dry as possible and free from dirt. If you need to pass a soft brush in the most internal and not reachable points.