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maelstrom

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  1. im a machinist by trade and anotherway to get a mirror finish on a a lapped part that is heat malable is to simply apply a heat gun to surface. take part and hold heat gun about 1-2 inches away and wave in the same direction back and forth .this will tend to lower the crests and raise the valleys of any heat affectable part,ie copper,al,silver etc. another helpfull lesson about lapping is that its best done in one direction ,not a back and forth motion.then as stated in guide do 90 degree rotation and repeat. using the above u can achieve a 4-10pu finish fairly quickly pu is a surface standard for finishs and is millionths of an inch anyway goodluck
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