Go Back   Computer Forums > General Computing > Hardware
Click Here to Login
Join Computer forums Today


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-11-2009, 11:57 PM   #1
Fully Optimized
 
Grantofhell's Avatar
 
Join Date: Apr 2009
Posts: 3,762
Default GUIDE: Lapping

Again, I guide I see is not on our computer related forums. ArrizX or a mod, please put this one in our Reference/Guide section as it probably doesn't belong on the main hardware page.

THIS WILL VOID THE WARRANTY ON YOUR PROCESSOR!

This is quick and simple guide to explain what lapping is and how it can be useful to you.

First off - Lapping. But this guide will instruct you how to hand-lap your processor, heatsink, or any other device with a necessary contact.

Necessary Items -
  • A Flat Surface - A lot of people say "only use glass!". But honestly, you can use a table top if you want. As long as the surface is flat and level.
  • Lapping/Sanding Paper - Depends on how long you want to work. I'd suggest 220, 400, 600, 800, and 1000, and even 1500 in some cases. You could go with 2000 and 2500 if you want, but you might pay some pretty pennies.
  • Tape - Any kind will do, as long as it holds.
  • Marker - Preferably Sharpie.
  • Compressed Air - Helps you to make sure the processor/HS are clean when done.

*Side Notes*

Some people suggest to use something to keep the "pins" straight. If you're on S775 or the likes you should be fine as they don't have pins

Now that you've got all your materials, Start the project like this.

Take the Sharpie and draw an X on on the item, from corner to corner. This will help you to see how uneven your item really was and know when you've completely reached the copper in your IHS (Integrated Heat Spreader).

Next up, prepare your surface. Take the first paper, 220, and tape it down to your flat surface on all four corners.
Take your item, and run it over the sanding paper in a circular motion. Do this until all of the nickel coating is gone/worn away. Be sure to rotate your item by 90 degrees every 15 seconds to ensure even sanding.

Once all of the nickel is gone and you see bare copper, switch up to 400 grit. (by taping it down to you surface.) Again, the circular motion, occasionally turning the item by 90 degrees. Use 400 until some of the deeper scratches lighten up.

Proceed to 600 grit, At this point, you can start going vertically and horizontally switching between them every 15 seconds.

Do the above with 800, and 1000 until you are satisfied. You are also welcome to continue with 1500, 2000, and even 2500. Doing various movements to counteract the previous scratches. It doesn't have to have a mirror finish, that's just a nice touch. The point of lapping is to even out the surface of your item so that it makes MORE contact and transfers heat better. Also, you will need slightly less thermal compound applied to your item after it has been lapped; There are less microscopic gaps for the compound to fill!

Here's a little something I got done on one of my old P4 478's and it's heatsink. vvvv







Suggestions? Comments? Additions? Corrections? Post it here.

~Grantofhell.
__________________

__________________
RD-PC -//- i7 950 // Evga x58 SLI // 3x2 OCZ PC3-12800 // 2x Evga GTX470 // Corsair HX850 // SilverStone TJ07
Grantofhell is offline   Reply With Quote
Old 07-12-2009, 12:10 AM   #2
Fully Optimized
 
dude_56013's Avatar
 
Join Date: Jul 2007
Posts: 4,262
Default Re: GUIDE: Lapping

I think it's important to note that lapping isn't to achieve a mirror finish (which you sort of note), but to take the deep grooves out the heat conductor on whatever you are working on so that you have more metal to metal contact, rather than metal -> TIM -> metal contact. It's also important to note, that after lapping correctly, you should NOT need to put as much TIM on as before you lapped, since obviously, you created a smoother surface with narrower ridges, therefore requiring less TIM to fill the voids.

In any case, a very good guide.

Also, just to add, you can wet sand your HSF is you want to. That's what I've done before with a lot of old "block style" HSFs from older machines. I'm sure you can do the same to newer HSFs as well. I wouldn't recommend wet sanding your CPU, though

BTW: To any mods or David; it sure would be nice to have a section devoted to guides. I think it would make finding them a lot easier.
__________________

__________________
Intel Core i7-2600K @ 3.4GHz || GIGABYTE GA-Z68X-UD3P-B3 || Corsair Vengeance 16GB DDR3-1600 || EVGA GeForce GTX 480 || Samsung EVO 256GB SSD
my feet get cold and that gives me diarrhea sometimes - Smart_Guy
dude_56013 is offline   Reply With Quote
Old 07-12-2009, 12:16 AM   #3
Fully Optimized
 
Grantofhell's Avatar
 
Join Date: Apr 2009
Posts: 3,762
Default Re: GUIDE: Lapping

Thanks I'll add it in.

Also, we do have a devoted section, it's just not...noticeable.
__________________
RD-PC -//- i7 950 // Evga x58 SLI // 3x2 OCZ PC3-12800 // 2x Evga GTX470 // Corsair HX850 // SilverStone TJ07
Grantofhell is offline   Reply With Quote
Old 07-12-2009, 12:40 AM   #4
Fully Optimized
 
dude_56013's Avatar
 
Join Date: Jul 2007
Posts: 4,262
Default Re: GUIDE: Lapping

Quote:
Originally Posted by Grantofhell View Post
Thanks I'll add it in.

Also, we do have a devoted section, it's just not...noticeable.
I assume you mean the reference/guide sticky? It's okay, but even I forget to look there (obviously).
__________________
Intel Core i7-2600K @ 3.4GHz || GIGABYTE GA-Z68X-UD3P-B3 || Corsair Vengeance 16GB DDR3-1600 || EVGA GeForce GTX 480 || Samsung EVO 256GB SSD
my feet get cold and that gives me diarrhea sometimes - Smart_Guy
dude_56013 is offline   Reply With Quote
Old 07-12-2009, 01:07 AM   #5
In Runtime
 
pepzsoduh's Avatar
 
Join Date: May 2009
Posts: 464
Default Re: GUIDE: Lapping

what exactly are you lapping? the heatsink or the processor?
__________________
intel core-i7 920 4+ GHz with the thermaltech 120 extreme with adition 120mm fan lapped. mobo: asus p6t deluxe gpu: Sapphire 5870 OCED. PSU: power pc and cooling 910 watt RAM: Corsair 6GB ddr3 1600 HDD: two 640 Gb WB Caviar in RAID 0: coolermaster haf 932 with all red fans
monitor: samsung ToC T260 roseblack 25.5" 5ms 1920x1200
pepzsoduh is offline   Reply With Quote
Old 07-12-2009, 01:16 AM   #6
Fully Optimized
 
Grantofhell's Avatar
 
Join Date: Apr 2009
Posts: 3,762
Default Re: GUIDE: Lapping

Both. I lapped my old P478 on the nickel plate, and the stock HS that came with it. I'm currently lapping the proc down to the copper plate. Maybe even shoot for a semi-mirror finish.
__________________
RD-PC -//- i7 950 // Evga x58 SLI // 3x2 OCZ PC3-12800 // 2x Evga GTX470 // Corsair HX850 // SilverStone TJ07
Grantofhell is offline   Reply With Quote
Old 07-12-2009, 01:21 AM   #7
(╯□)╯︵ ┻━┻
 
Teny's Avatar
 
Join Date: Dec 2006
Location: United States
Posts: 5,957
Default Re: GUIDE: Lapping

I need to find some friends who have some experience to help me do these type of things.
__________________
Desktop -Cooler Master NV690/AMD Phenom II X4 965 BE/MSI 880G-E45 Motherboard/2 x 2GB DDR3 G.Skill Ripjaws X/Sapphire HD 5870 1GB GDDR5/CORSAIR CMPSU-550VX/Seagate 7200.12 500GB (OS), Samsung F3 1TB (Storage)/Sony DVD Burner/Windows 7 Professional 64-bit
Teny is offline   Reply With Quote
Old 07-12-2009, 01:22 AM   #8
Fully Optimized
 
Grantofhell's Avatar
 
Join Date: Apr 2009
Posts: 3,762
Default Re: GUIDE: Lapping

You have all of us here I've done a number of different mods. Not terribly good, but I have some experiences.
__________________
RD-PC -//- i7 950 // Evga x58 SLI // 3x2 OCZ PC3-12800 // 2x Evga GTX470 // Corsair HX850 // SilverStone TJ07
Grantofhell is offline   Reply With Quote
Old 07-12-2009, 01:24 AM   #9
(╯□)╯︵ ┻━┻
 
Teny's Avatar
 
Join Date: Dec 2006
Location: United States
Posts: 5,957
Default Re: GUIDE: Lapping

Yeah, but it would be a lot better if there was someone there right near me so they can tell me what to do, when to stop, etc.
__________________
Desktop -Cooler Master NV690/AMD Phenom II X4 965 BE/MSI 880G-E45 Motherboard/2 x 2GB DDR3 G.Skill Ripjaws X/Sapphire HD 5870 1GB GDDR5/CORSAIR CMPSU-550VX/Seagate 7200.12 500GB (OS), Samsung F3 1TB (Storage)/Sony DVD Burner/Windows 7 Professional 64-bit
Teny is offline   Reply With Quote
Old 07-12-2009, 01:27 AM   #10
Fully Optimized
 
Grantofhell's Avatar
 
Join Date: Apr 2009
Posts: 3,762
Default Re: GUIDE: Lapping

You could start a thread in hardware and take pictures occasionally or when you need help. >.>
__________________

__________________
RD-PC -//- i7 950 // Evga x58 SLI // 3x2 OCZ PC3-12800 // 2x Evga GTX470 // Corsair HX850 // SilverStone TJ07
Grantofhell is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -5. The time now is 10:04 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.6.0