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Lapping TRUE black edition and Q6600. - Page 3

post #21 of 25
Quote:
Originally Posted by jacksknight View Post
I do 90 degree turn between grits after the 220. So 220 then turn, 320 turn, so on...
I would recommend against this, actually. You should be varying your stroke, ideally by only 45 degree turns, every 10-15 minutes or so to ensure that you're removing the material evenly. And each stroke should only go in one direction, no back & forth, no matter how tired / frustrated you get.

Not rotating your turn frequently enough or using a heavy hand while gently sliding it across the wet/dry sandpaper - which you've either applied lubricating oil to or are rinsing with water ever several minutes - will lead to the device developing a very flat surface that has a bias (or "slant/angle/etc.") on it.

Here's a really good image of what that bias looks like behind a lightsource...


Also, as a personal trick, I've found you can use a water based marker to gauge how well your surfaces are mating with each other as you work the two devices...

#1 - lay a thick coat of ink down on the heat-sink surface
#2 - carefully place your processor on top if it before it dries
#3 - press firmly for a second and remove the cpu...
#4 - use a wet towel/rubbing alcohol to remove the ink
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C2Q Q6600 G0 SLACR (lapped) GIGABYTE GA-EP45-UD3P GIGABYTE 8800-GTX 768MB (4) 2GB OCZ (OCZ2F8004GK) 
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CPUMotherboardGraphicsRAM
C2Q Q6600 G0 SLACR (lapped) GIGABYTE GA-EP45-UD3P GIGABYTE 8800-GTX 768MB (4) 2GB OCZ (OCZ2F8004GK) 
Hard DriveOptical DriveOSMonitor
(2) WD Caviar WD7500AAKS 750GB (2) Samsung SH-203B 20X DVD±R DVD Burner Windows Vista x64 SP1 (2) Samsung 226BW "S" 2ms (GTG) 700:1(DC 3000:1) 
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post #22 of 25
Thread Starter 
Alright guys, I just got my TRUE black and I'm about to LAP it. I have one question I left out. DOES it matter if I put water on the sand paper then lap it?
    
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SG500GB + WD160GB 2x WD500GB Vista Ultimate 64bit BenQ 22" 
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post #23 of 25
Quote:
Originally Posted by bLinkZor View Post
Alright guys, I just got my TRUE black and I'm about to LAP it. I have one question I left out. DOES it matter if I put water on the sand paper then lap it?
I found once I got to 800 grit, the amount of dust being produced was making the paper be useless after the first set of 90 degree turns, so I started using water. It seemed to go a lot smoother and made the paper last longer.

Only downside was the bottom of the true got caked with copper mud and water was left in the crevices on the bottom. I just used paper towel to clean up the mud and used a can of compressed air to blow the water out of the crevices before I mounted.
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post #24 of 25
Quote:
Originally Posted by bLinkZor View Post
Alright guys, I just got my TRUE black and I'm about to LAP it. I have one question I left out. DOES it matter if I put water on the sand paper then lap it?
I'm constantly dunking and rinsing the wet-dry paper in a wash-tub I picked up from the dollar store for that very purpose. remember you're grinding away copper here and as you do so, you're also knocking off the garnet stones that actually make up the "grit".

As you get to higher and higher grits you run the risk of scratching/marring your surface with these strays... not to mention that the whole purpose of the "wet/dry" paper is to keep it wet to reduce friction as the less friction you have the easier it will be to put no bias (slant/angle) in terms of pressure on the device you're lapping.

My "Dev" box...
(13 items)
 
  
CPUMotherboardGraphicsRAM
C2Q Q6600 G0 SLACR (lapped) GIGABYTE GA-EP45-UD3P GIGABYTE 8800-GTX 768MB (4) 2GB OCZ (OCZ2F8004GK) 
Hard DriveOptical DriveOSMonitor
(2) WD Caviar WD7500AAKS 750GB (2) Samsung SH-203B 20X DVD±R DVD Burner Windows Vista x64 SP1 (2) Samsung 226BW "S" 2ms (GTG) 700:1(DC 3000:1) 
KeyboardPowerCaseMouse
Logitech G15 Ultra-X3 1000W ULT40064 SLi Ready SilverStone Temjin TJ09-SW Logitech G5 
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My "Dev" box...
(13 items)
 
  
CPUMotherboardGraphicsRAM
C2Q Q6600 G0 SLACR (lapped) GIGABYTE GA-EP45-UD3P GIGABYTE 8800-GTX 768MB (4) 2GB OCZ (OCZ2F8004GK) 
Hard DriveOptical DriveOSMonitor
(2) WD Caviar WD7500AAKS 750GB (2) Samsung SH-203B 20X DVD±R DVD Burner Windows Vista x64 SP1 (2) Samsung 226BW "S" 2ms (GTG) 700:1(DC 3000:1) 
KeyboardPowerCaseMouse
Logitech G15 Ultra-X3 1000W ULT40064 SLi Ready SilverStone Temjin TJ09-SW Logitech G5 
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post #25 of 25
Thread Starter 
My lapping is complete!!! I thank all you guys for helping me. I'm priming it right now, and temperatures are amazing!!! If I wouldn't have lapped this processor I would probably be in the 54C - 60C, but I'm in the 44C!!!

    
CPUMotherboardGraphicsRAM
Core 2 Q6600 G0 Stepping Lapped EVGA 780i SLI FTW GTX260 TRI SLI Mushkin Enhanced Blackline 8GB DDR2 @ 1066 
Hard DriveOptical DriveOSMonitor
SG500GB + WD160GB 2x WD500GB Vista Ultimate 64bit BenQ 22" 
KeyboardPowerCaseMouse
G15 v2 TT1200W Modular Power Supply Cooler Master Centurion 590 SteelSeries Xai 
Mouse Pad
SteelSeries 9HD 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Core 2 Q6600 G0 Stepping Lapped EVGA 780i SLI FTW GTX260 TRI SLI Mushkin Enhanced Blackline 8GB DDR2 @ 1066 
Hard DriveOptical DriveOSMonitor
SG500GB + WD160GB 2x WD500GB Vista Ultimate 64bit BenQ 22" 
KeyboardPowerCaseMouse
G15 v2 TT1200W Modular Power Supply Cooler Master Centurion 590 SteelSeries Xai 
Mouse Pad
SteelSeries 9HD 
  hide details  
Reply
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