hmm aside from the added 20% in power another bonus of the new XP is the heat reduction of the machine under load, the machine was upgraded with a more powerful motor along with proper wiring for it to be able to handle more pressure under load without heating too much, so if with a 7424 you can polish for 4 hours straight before reaching X degrees it would take about 5 to 6 hours before the 7424xp reaches the same temperature so this makes the 7424xp also in some ways more durable






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