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Some real polishing tips
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I'm going to help you people out a little bit
first off depending on the roughness of material choose your grit ex. cast 180, billet 220, if its real porous material maybe start with 120. if you sand with like 80 grit your going to be there for a while getting all the gouges you put in out.
I never sand aluminum with more than 320 then it goes to the buffing machine where various buffs and compounds are used from harder buffs and black or brown rouge to softer buffs and green or white rouge [linked by editor to product info at Amazon] there is no set time on how long to buff something it all done by trained eye or practice to know what you are looking for before moving to the next step
I use some special products that are bought in bulk to aid in faster cutting such as buffs or emery wheel sisals and so on because of the need of quicker turnarounds but the tips given are the real way a part should be polished and won't take your life expectancy or a case of fingers and elbow grease
HOPE THIS SAVES YOU GUYS SOME TIME! AND START PRACTICING
justin mcconnellcustom polishing shop wheel repair - merced, California