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Old 06-18-2010   #1
Sgreg
 
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Default Polishing zinc coated billet aluminum ????

Polished my a-- off on some aluminum wheel centers only to realize they are zinc coated and won't polish until the zinc is removed. I want to put a mirror polish on them to match the wheel rims. What is the best way to cut the zinc coat to get to the aluminum ??? Anyone done this ?? Thanks for the help. I hate to just grind them down and have to polish out deep swirls.
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Old 06-18-2010   #2
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Default Re: Polishing zinc coated billet aluminum ????

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Originally Posted by Sgreg View Post
Polished my a-- off on some aluminum wheel centers only to realize they are zinc coated and won't polish until the zinc is removed. I want to put a mirror polish on them to match the wheel rims. What is the best way to cut the zinc coat to get to the aluminum ??? Anyone done this ?? Thanks for the help. I hate to just grind them down and have to polish out deep swirrels.

Carter may know ?
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91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat

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Old 06-18-2010   #3
Sgreg
 
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Default Re: Polishing zinc coated billet aluminum ????

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Carter may know ?
Yeah, but Carter won't tell me !
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Old 06-18-2010   #4
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Default Re: Polishing zinc coated billet aluminum ????

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Yeah, but Carter won't tell me !
Send em to me and I'll machine the zinc off and then you can polish to your little hearts content
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Old 06-18-2010   #5
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Default Re: Polishing zinc coated billet aluminum ????

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Send em to me and I'll machine the zinc off and then you can polish to your little hearts content
Carter, to tell you the truth I am guessing they have a zinc coat because Billet polish does not turn my rag black when buffing them. Not a clear coat. Would that be your guess, too ? I did not know zinc is that much harder a metal than aluminum. I guess I just need to get after them with some 200 grit and take the zinc off and then worry about the smooth polishing. I think this is something I should be able to do without bothering you. Really appreciate the offer though.
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Old 06-18-2010   #6
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Default Re: Polishing zinc coated billet aluminum ????

If done right the zinc coating is a bear to deal with. It sure does protect the part. Good luck.
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