Zardon

Staff member Joe "Roadee" Dawson has a great step by step guide up for everyone, showing you how to lap your heatsink.

This is the next installment in our guides series and im sure will prove benefical to alot of members.

To read the guide please go to this page on Driverheaven and be sure to pass your comments or address any questions to Joe in our forums.

The_Neon_Cowboy

verry good work . nice mirror shine!

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Chaos

very nice indeed !!!!!

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toddsmack2k

Great and handy guide

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Sourcer_2002

Beat me to it man!!!! Nice guide

Roadee

Hope it comes in handy for someone. Maybe if someone that has never done this before decides to try it.......then they will post about there experience in here.

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We are born naked, wet, and hungry. Then things get worse.

Sourcer_2002

It really does help, the first time i did it i didnt think that it would make much of a difference. You really see a decrease in temp with new and old heatsinks.

dipstick

Great guide Roadee! It really does help to lap the heatsink and you've writen a great easy-to-follow guide. THX!!!

WildChild

Very Cool Guide......

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Knowledge is SCARY,Stupidity is REALLY frightening

Roadee

Thanks everyone........if anyone has any question on this guide or others......just let me know. I am here to help any way I can.

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We are born naked, wet, and hungry. Then things get worse.

Judas

....i'd like to give it a try...... also... i thought polishing was a very bad idea... and i can understand why..... polish fills in the unseen dips in the heatsink were the thermal paste is saposed to go...... right? (cause more heat... then before)

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craig588

yeah, I would reccomend againts polishing. A mirror finish acctually raised my temps by 1C compared to a regular 1200 grit sanded finsh.

Judas

I should attempt to make my own heatsink from scratch.... wonder what the BEST heatsink material would be... i know copper is good..but is there something else better...... i could make on mean heatsink with the tools i could use....

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Veridian3

A block of gold.

Zardon

1c? of course you quote this extremely minor increase taking into consideration changes in ambient room temperature and other fan related variables, right?

Judas

that stuff is way to soft to play with... and hard to get ahold of.... when i have money... and i mean a serious amount... i'll do it....

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Zardon

judas I hate to break it to you but I think he was yanking your chain.

Veridian3

Of course i was, everyone knows the most conductive metals are Silver then Copper then Gold...

Zardon

Actually although its an interesting theory, I am not quite so sure it would be feasible or practical to attempt making a heatsink, there is a surprisingly high amount of R&D that goes into the design of a heatsink, its not just the case of plopping on a piece of copper. If you take a look at a thermalright SLK or another of the high end heatsinks, the build quality and the fans, and design is of an extremely high quality.

eyeguy616

I wonder when we can expect super extreme air cooling solutions to use a core of silver with copper/aluminum fins? We already know the wonders of ThermalRight's ALX-800, a near perfect fusion of copper and aluminum that cools as well as the SLK-800 with ~100grams less weight and is 10-20 dollars cheaper.... I wonder how a silver (plus aluminum/copper) heatsink would do?

~eyeguy616

Roadee

Well........I guess some of your statement is true......if you use a cheap polish! I prefer to use Wenol. Reason being, is that it is high quality, used extensively in manufacturing that concerns chrome and other soft metals. It doesn't take long to get the desired look. Easy clean up, and it protects the metal from tarnishing, and with copper this is a plus. If you lap your heatsink properly, and clean it with rubbing alcohol real good.......then make sure that it is dry and use rubber surgical type gloves when polishing........then there wont be any crevices for the polish to fill. Of course doing it this way is pretty anal......

As far as temp differences.....on an aluminium heatsink. Lapping with up to 1000 grit will drop the temp......let's say for example......8 F, on a cheap one, work up to 1500 and you will gain maybe 2 F more.......polish it and you may gain nothing or maybe 1 F......but if done right.......you wont lose anything.....polishing correctly will take what little pits there are.....and make them even smaller. The smaller the pits.......then the more surface area for heat transfer.......and the less thermal compound is needed.

Alot of top heatsink makers lap by a machine........and then polish the base with a buffing wheel.......by polishing they are protecting the raw metal surface and it gives it the appearance of being lapped better than it actually is. And that saves them money in machine work. Think about it.....it is market driven. Think about how many heatsink reviews you have seen, where the first thing they do is show you a picture of how much reflection there is from the base

But in the end......it all comes down to what you feel like doing. As I said in the guide....it is optional.

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We are born naked, wet, and hungry. Then things get worse.

mainman

Anouther excelent guide...may be needing it soon....congrats buds this was really a great idea...keep up the good work...keep them comin.

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The_Neon_Cowboy

SLK 800U IS ONLY LIKE $30 SHIPPED

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craig588

these were temps taken from an average of 1 hour under load. (Speed fan automaticly calculates the avarages so it might have calculated it wrong, but I doubt that)

even if it was affected by a room temp increase, that still means that lapping doesnt do much because if it was cooling better and the room temp increased it probably should have stayed the same.

The_Neon_Cowboy

another 8 hourse and i'll have a good ref for ya
i of couse have recently did some lapping of my own

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eyeguy616

OK, ok, when I bought my slk-800a it was $45. The alx-800 goes for $20-$25 and does as good a job, so .

Still, I wonder how good a silver (core or whole thing) heatsink would do.... Anyone have a pile of cash laying around to buy some silver to find out? Possibly get enough to weigh as much as an SLK-900/800.
Let's see.... as of today the silver rate per ounce is ~$6.19 and the SLK-900 (for AMD) is 570 grams and 1 ounce = ~28 grams... so 570 gram = ~20 ounces which would be ~$124!

~eyeguy616

Matth

I recall reading somewhere else that the only gain from a mirror finish is in appearance, and that it MAY perform slightly worse than satin.

Suggestions were that a non-mirror finish provides a better thermal interface to the heatsink paste, through greater contact area, or that makes it easier for any excess paste (don't dollop it on!) to squeeze out.

The_Neon_Cowboy

sliver is less thrmal conductive then copper, also it costs alot more


the finish isn't the biggest factor the cpu 's surface being 101% flat is

thats the whole point of lapping has only slightly to do with the surface it has mostly to do withit being absoluly flat

[pople are useing power tools etc .. you cant you wont end up with a 101% perfectly flat perfectly smoothe surface


i've had heasink pull the cpu out of the socket when trying to remove them becouse the connecting was so strong (useing as3)

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The_Neon_Cowboy

here a shot from the artical i was working on.... but roadee beat me 2 it

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PoopyTheJ

Playing second fiddle is always rough. Of course you should have some practice trying to keep up with me in CoD.

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