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Perfectly Lapped Surface ? [NH-D14] [HELP]

post #1 of 17
Thread Starter 
Hi guys,

I would like to ask skilled "Lappers" what's best way to check, that my lapping work is rly good, I mean best possibly achievable .

I started with 320 sandgrid and than went up - 500,800,1000,2000,2500 and here are my results :

450450450450450

Guides are saying that there shouldn't be any light going thru razorblade, and there is .. frown.gif on my heatsink but , its bit different from razor to razor or sides of razor, so I think this quest is bit impossible, correct me please if I am wrong about this.

Also I try putting campari on heatsink in hope, that it's red so I will be able see how flat surface is but when I push glass on that its not red anymore biggrin.gif

450450

With glass on top of heatsink :

450450450450450450

Than I try ketchup and I got same results :

450450450

With glass :

450450450450

I am quite newbie in lapping so take it in mind pls biggrin.gif

Any advice on how to enhance this lapping result would be great . I am now waiting for Viper fans so I have time to make this perfect smile.gif

Thx in advance wink.gif
post #2 of 17

heres a detailed discussion with inputs from some real pros :)

 

http://www.overclock.net/t/455498/lapping

 

 

sorry,forgot to paste the link :)


Edited by breadcrums - 1/31/12 at 8:35am
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First PC :)
(13 items)
 
Dragon tattoo
(20 items)
 
wish
(1 item)
CPUMotherboardGraphicsRAM
HP Vectra 486/25N@25MHz EISA stone age! 4MB EDORAM 
Hard DriveOptical DriveCoolingOS
480MB  none Slits in cabinet,no fans. Windows 95 
MonitorKeyboardMouseAudio
Samsung 12" B/W Samsung Samsung HDD speaker  
Other
D-link Ethernet 56k modem 
CPUMotherboardGraphicsRAM
Intel Core i5 760@3.8ghz@1.28V P55-UD3L Sapphire AMD 7770 1gb DDR5 Corsair XMS3 2x4gb 
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1tb Seagate Baracuda  Segate 1.5Tb external Samsung DVD RW(cheap stuff) Hyper 212+ push/pull 
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Windows 7 Ultimate 64bit dell 22'' st2220m full HD Razer Arctosa 600W zebronics PRO 
CaseMouseMouse PadAudio
Cooler master Elite310-modded with holes,mesh,etc. Lenovo 6812 1600dpi Razer Goliathus Bose 2.0  
AudioOtherOtherOther
Bose triport Headphones cooler master silent pro s12 120mm fans 2X cooler master blade master Cooler Master 90CFM 120mm red LED fan 
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post #3 of 17
Thread Starter 
I don't see any link frown.gif
post #4 of 17

sorry man..edited the post..had forgotten to paste the link blushsmiley.gif

First PC :)
(13 items)
 
Dragon tattoo
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wish
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CPUMotherboardGraphicsRAM
HP Vectra 486/25N@25MHz EISA stone age! 4MB EDORAM 
Hard DriveOptical DriveCoolingOS
480MB  none Slits in cabinet,no fans. Windows 95 
MonitorKeyboardMouseAudio
Samsung 12" B/W Samsung Samsung HDD speaker  
Other
D-link Ethernet 56k modem 
CPUMotherboardGraphicsRAM
Intel Core i5 760@3.8ghz@1.28V P55-UD3L Sapphire AMD 7770 1gb DDR5 Corsair XMS3 2x4gb 
Hard DriveHard DriveOptical DriveCooling
1tb Seagate Baracuda  Segate 1.5Tb external Samsung DVD RW(cheap stuff) Hyper 212+ push/pull 
OSMonitorKeyboardPower
Windows 7 Ultimate 64bit dell 22'' st2220m full HD Razer Arctosa 600W zebronics PRO 
CaseMouseMouse PadAudio
Cooler master Elite310-modded with holes,mesh,etc. Lenovo 6812 1600dpi Razer Goliathus Bose 2.0  
AudioOtherOtherOther
Bose triport Headphones cooler master silent pro s12 120mm fans 2X cooler master blade master Cooler Master 90CFM 120mm red LED fan 
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First PC :)
(13 items)
 
Dragon tattoo
(20 items)
 
wish
(1 item)
CPUMotherboardGraphicsRAM
HP Vectra 486/25N@25MHz EISA stone age! 4MB EDORAM 
Hard DriveOptical DriveCoolingOS
480MB  none Slits in cabinet,no fans. Windows 95 
MonitorKeyboardMouseAudio
Samsung 12" B/W Samsung Samsung HDD speaker  
Other
D-link Ethernet 56k modem 
CPUMotherboardGraphicsRAM
Intel Core i5 760@3.8ghz@1.28V P55-UD3L Sapphire AMD 7770 1gb DDR5 Corsair XMS3 2x4gb 
Hard DriveHard DriveOptical DriveCooling
1tb Seagate Baracuda  Segate 1.5Tb external Samsung DVD RW(cheap stuff) Hyper 212+ push/pull 
OSMonitorKeyboardPower
Windows 7 Ultimate 64bit dell 22'' st2220m full HD Razer Arctosa 600W zebronics PRO 
CaseMouseMouse PadAudio
Cooler master Elite310-modded with holes,mesh,etc. Lenovo 6812 1600dpi Razer Goliathus Bose 2.0  
AudioOtherOtherOther
Bose triport Headphones cooler master silent pro s12 120mm fans 2X cooler master blade master Cooler Master 90CFM 120mm red LED fan 
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Reply
post #5 of 17
Thread Starter 
Np, thx
post #6 of 17
Once you get beyond 2000 grit you're pretty much going backwards IME so I would not try for a mirror finish.
post #7 of 17
Thread Starter 
What do u mean by backwards ? About mirror finish , tbh I am not going for it my goal is get best possible performance from this cooler.
post #8 of 17
then stop @ 1000 grit
TIM needs something to stick to.....
 
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Thuban Powah!
(14 items)
 
 
CPUMotherboardGraphicsRAM
Xeon X5650 Asus P6X58D-E Sapphire HD 7950 G.Skill Trident-X 2600 CL10 
Hard DriveCoolingPowerCase
Samsung 840 pro Bong cooler / RASA waterblock Rosewill Capstone Gold 750 None 
MouseMouse PadAudio
cheap! Newegg box panel ibeats with onboard. 
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1075T w/2 cores locked @ 4.2+ M4a89GTD-Pro XFX Radeon HD 5870 8gb Samsung ddr3 1600 11-11-11-28@ 8-8-8-24 
Hard DriveHard DriveOptical DriveCooling
OCZ Agility2 40gb WD Blue 500GB Lite-On RASA waterblock 
OSMonitorKeyboardPower
Windows & Linux Samsung 1080p 2 ms Dell Thermaltake TR2-800 
CaseMouse
Cooler Master Elite 330 (was) cheap 
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Reply
post #9 of 17
Thread Starter 
I just try flat ruler for checking "flatness" and it looks fine, but I am not sure if this tool is good enough for this purpose. Anybody knows ?

450450

And this is my finish so far :

450
post #10 of 17
Thread Starter 
It's better to end with 1000 than 2500 ? Shouldn't I get better surface with higher grid paper ?
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