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Just got a D14 in, not super-happy with the finish on the contact surface.  

post #1 of 39
Thread Starter 
So the contact surface on the D14 is hardly a mirror shine. I work in a testing lab and have access to metallurgical polishing wheels that could give it that mirror shine; this would probably remove the nickel plating and expose the underlying copper. Is this a horrible, horrible idea?
post #2 of 39
Quote:
Originally Posted by ZeGermans750 View Post

So the contact surface on the D14 is hardly a mirror shine. I work in a testing lab and have access to metallurgical polishing wheels that could give it that mirror shine; this would probably remove the nickel plating and expose the underlying copper. Is this a horrible, horrible idea?

Yes.

The way it's made makes it among the very best air coolers out there. Why mess with it?

.02
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post #3 of 39
Quote:
Originally Posted by ZeGermans750 View Post

So the contact surface on the D14 is hardly a mirror shine. I work in a testing lab and have access to metallurgical polishing wheels that could give it that mirror shine; this would probably remove the nickel plating and expose the underlying copper. Is this a horrible, horrible idea?

If it ain't broke,DON'T fix it!smile.gif
post #4 of 39
The surface finish and flatness of the D14 is generally considered very good. I wouldnt worry about the ability to use it to apply makeup.
    
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post #5 of 39
If you're willing to mess up and replace it, then of course you give it a shot.

Are you going to keep the surface very, very flat? Instead of a wheel, maybe use a slab of glass and elbow grease.. what do those metullergy tools look like?
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post #6 of 39
A shiny finish is not what you want. A smooth, flat surface is what you want. Unless the surface is actually rough or warped, I would not mess with it especially on a polishing wheel where it would be impossible to keep it flat.

Polishing is likely to remove the nickel coating which will allow the copper to oxidize and reduce thermal conduction from the heat spreader to the heat sink. While some folks do lap the base, it's usually only worth 1-2C but it has the risk of creating the aforementioned oxidation if you break thru the nickel flash coating which can be only ~.001" thick.
post #7 of 39
Correct me if I'm wrong but the level of shine has nothing to do with the flatness of the contact surface. And neither does it have an influence on heat conductivity. So yeah it's a bad idea and I would leave it as it is. wink.gif
Edited by Lisjak - 2/28/12 at 1:30pm
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post #8 of 39
Quote:
Originally Posted by AMD4ME View Post

A shiny finish is not what you want. A smooth, flat surface is what you want. Unless the surface is actually rough or warped, I would not mess with it.
Polishing is likely to remove the nickel coating which will allow the copper to oxidize and reduce thermal conduction from the heat spreader to the heat sink. While some folks do lap the base, it's usually only worth 1-2C but it has the risk of creating the aforementioned oxidation if you break thru the nickel flash coating which can be only ~.001" thick.

this,+rep
Edited by PontiacGTX - 2/28/12 at 1:28pm
post #9 of 39
Quote:
Originally Posted by AMD4ME View Post

A shiny finish is not what you want. A smooth, flat surface is what you want. Unless the surface is actually rough or warped, I would not mess with it especially on a polishing wheel where it would be impossible to keep it flat.
Polishing is likely to remove the nickel coating which will allow the copper to oxidize and reduce thermal conduction from the heat spreader to the heat sink. While some folks do lap the base, it's usually only worth 1-2C but it has the risk of creating the aforementioned oxidation if you break thru the nickel flash coating which can be only ~.001" thick.

Copper will not oxidize with no oxygen.Unless you plan on installing an air pocket too it would be fine.Nickel will reduce the thermal conduction over copper though.

Generally,the shinier the metal the smoother it is.
Edited by Redwoodz - 2/28/12 at 2:07pm
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post #10 of 39
Quote:
Originally Posted by Redwoodz View Post


Generally,the shinier the metal the smoother it is.

actually... the shinier the metal...... the more polishing compound you used while polishing it biggrin.gif which begs the question.... how well do polishing compound perform as TIM ? biggrin.gif

just remember the 1st rule of computing. if it ain't broke, don't fix it biggrin.gif
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