• We've upgraded our forums. Please post any issues/requests in this thread.

would clamping a CPU in a vice be save?

hat

Enthusiast
Joined
Nov 20, 2006
Messages
18,527 (4.58/day)
Likes
3,160
Location
Ohio
System Name Starlifter :: Dragonfly
Processor i5 2400 :: Athlon II x4 630
Motherboard MSI H67-G43-B3 :: GIgabyte GA-770T-USB3
Cooling Corsair H70 :: Thermaltake Big Typhoon
Memory 4x2GB DDR3 1333 :: 2x1GB DDR3 1333
Video Card(s) 2x PNY GTX1070 :: GT720
Storage Plextor M5s 128GB, WDC Black 500GB :: Mushkin Enhanced 60GB SSD, WD RE3 1TB
Display(s) Acer P216HL HDMI :: None
Case Antec SOHO 1030B :: Old White Full Tower
Audio Device(s) X-Fi Titanium Fatal1ty Pro - iLive IT153B Soundbar (optical) :: None
Power Supply Corsair CX600w :: Unknown
Software Windows 10 Pro - Plex Server on Dragonfly
Benchmark Scores >9000
#1
I'm thinking about lapping my CPU but I was wondering how I would keep it still. Would clamping it in a vice be safe? If not, what other meathods could I use? I wouldn't be using extreme pressure like someone would when they're bending metal, just enough to keep it in place when I'm sanding it.
 
Joined
Aug 31, 2006
Messages
452 (0.11/day)
Likes
37
Location
UK
Processor Intel® Core™ 2 Quad Q6600 Quad Core Processor(2.4GHz,8MB Cache,1066MHz)
Motherboard ASUSTeK - P5N-E - SLI nForce 650i SLI(C55) - ATX
Cooling TRUE with Xilence Red Wing 120mm fan
Memory OCZ 4GB (2x2GB) DDR2 800Mhz/PC2-6400 GOLD XTC
Video Card(s) Sapphire HD3870 XT 512MB Arctic Cooling Acellero S1 Rev. 2
Storage Seagate ST3500320AS 500GB SATA II 7200rpm 32MB Cache
Display(s) HANNS-G HU196D 19"
Case Antec 1200
Audio Device(s) 5.1 High Definition onboard sound card - 6 Channel Cinema sound
Power Supply 550W PSU
Software Windows Vista Home Premium 32bit
Benchmark Scores 10713 3DMark06 - No overclocking on anything
#2
Tape down the sandpaper and hold the CPU. Sounds much safer to me.
Some come in a small plastic retainer, so you could leave it in that to avoid bending pins.
 

hat

Enthusiast
Joined
Nov 20, 2006
Messages
18,527 (4.58/day)
Likes
3,160
Location
Ohio
System Name Starlifter :: Dragonfly
Processor i5 2400 :: Athlon II x4 630
Motherboard MSI H67-G43-B3 :: GIgabyte GA-770T-USB3
Cooling Corsair H70 :: Thermaltake Big Typhoon
Memory 4x2GB DDR3 1333 :: 2x1GB DDR3 1333
Video Card(s) 2x PNY GTX1070 :: GT720
Storage Plextor M5s 128GB, WDC Black 500GB :: Mushkin Enhanced 60GB SSD, WD RE3 1TB
Display(s) Acer P216HL HDMI :: None
Case Antec SOHO 1030B :: Old White Full Tower
Audio Device(s) X-Fi Titanium Fatal1ty Pro - iLive IT153B Soundbar (optical) :: None
Power Supply Corsair CX600w :: Unknown
Software Windows 10 Pro - Plex Server on Dragonfly
Benchmark Scores >9000
#3
I'm worried about bending the pins though. If I just hold it I'm sure some pins are going to be bent. If I could just clamp it in a vice there would be no chance of bending the pins.
 
Joined
Sep 25, 2006
Messages
2,312 (0.56/day)
Likes
670
Location
Norn Iron
Processor Q9550 @3.8
Motherboard Asus Maximus Extreme
Cooling Custom water cooling
Memory 4GB Patriot Viper DDR3 1600MHz
Video Card(s) 2x HD4870 512MB
Storage 2x 500GB
Display(s) 3x LG L226WTQ 22" Widescreen LCD
Case Modded TJ07
Audio Device(s) On board
Power Supply PC P&C Silencer 750
Software Windows 7 Ultimate
#4
As red said..get a piece of glass and tape the sandpaper to it and then hold the CPU in your hand and apply the pressure down on the glass while moving the CPU up and down the paper.
 
Joined
Aug 31, 2006
Messages
452 (0.11/day)
Likes
37
Location
UK
Processor Intel® Core™ 2 Quad Q6600 Quad Core Processor(2.4GHz,8MB Cache,1066MHz)
Motherboard ASUSTeK - P5N-E - SLI nForce 650i SLI(C55) - ATX
Cooling TRUE with Xilence Red Wing 120mm fan
Memory OCZ 4GB (2x2GB) DDR2 800Mhz/PC2-6400 GOLD XTC
Video Card(s) Sapphire HD3870 XT 512MB Arctic Cooling Acellero S1 Rev. 2
Storage Seagate ST3500320AS 500GB SATA II 7200rpm 32MB Cache
Display(s) HANNS-G HU196D 19"
Case Antec 1200
Audio Device(s) 5.1 High Definition onboard sound card - 6 Channel Cinema sound
Power Supply 550W PSU
Software Windows Vista Home Premium 32bit
Benchmark Scores 10713 3DMark06 - No overclocking on anything
#5
I'm worried about bending the pins though. If I just hold it I'm sure some pins are going to be bent. If I could just clamp it in a vice there would be no chance of bending the pins.
I edited about leaving it in the plastic, so you probably didn't see it yet.
Also, you could put some card or something inside the plastic, in order to make sure you don't end up sanding the plastic as well. Like a spacer.
 
Joined
May 31, 2007
Messages
1,051 (0.27/day)
Likes
71
Location
Port Fairy, Victoria, Australia
System Name Rampage 3.0
Processor i7 3770K 4.2Ghz
Motherboard ASRock Z77 Extreme 4
Cooling Corsair 110 (280mm rad)
Memory 16GB G.Skill Sniper F3-1866 10-11-10 CR1
Video Card(s) 2 X gigabyte 7970 ghz edition @1100mhz / 6000mhz
Storage samsung 500 GB + 128GM crucial M4 ssd
Display(s) LG IPS235P 23in IPS 1080p
Case corsair vengance c70 - white
Audio Device(s) On Board
Power Supply Corsair HX-750w
Software Windows 7 Ultimate 64 bit
#6
dont clamp it. as said, tape down the sand paprer (wet n dry) to a flat surface, eith a thick piece of glass or a mrbale surface and huse you hand to fold the cpu and/or heat sink.. dont apply too much pressure just a gently pressure, prity much let the weight of the cpu do the work
 
Joined
Aug 5, 2007
Messages
316 (0.08/day)
Likes
46
Location
Canuckistan
System Name Slave
Processor Core i7 920 @4.2 Lapped
Motherboard Biostar Tpower x58
Cooling Ek Supreme + Backplate, Thermochill 120.3, mcp655
Memory 6Gb Gskill Black Pi ddr3 1600 8-7-7-19 1t
Video Card(s) XFX R9 290 (flashed to 290x) + DTek Fuzion block @1100
Storage Samsung 840 evo, WD Black
Display(s) Asus PB278Q 1440p
Case p180b
Audio Device(s) Creative X-Fi Extreme P.O.S.
Power Supply Enermax Revolution 85+ 950watt
Benchmark Scores i7 920 c0 @ 4.6ghz
#7
Use the foam pad that came with the cpu to protect the pins and use tape to secure it.
It is recomended to rub the cpu on a flat surface. I doubt using tools would do a good job...
 
Joined
Aug 31, 2006
Messages
452 (0.11/day)
Likes
37
Location
UK
Processor Intel® Core™ 2 Quad Q6600 Quad Core Processor(2.4GHz,8MB Cache,1066MHz)
Motherboard ASUSTeK - P5N-E - SLI nForce 650i SLI(C55) - ATX
Cooling TRUE with Xilence Red Wing 120mm fan
Memory OCZ 4GB (2x2GB) DDR2 800Mhz/PC2-6400 GOLD XTC
Video Card(s) Sapphire HD3870 XT 512MB Arctic Cooling Acellero S1 Rev. 2
Storage Seagate ST3500320AS 500GB SATA II 7200rpm 32MB Cache
Display(s) HANNS-G HU196D 19"
Case Antec 1200
Audio Device(s) 5.1 High Definition onboard sound card - 6 Channel Cinema sound
Power Supply 550W PSU
Software Windows Vista Home Premium 32bit
Benchmark Scores 10713 3DMark06 - No overclocking on anything
#8
Use the foam pad that came with the cpu to protect the pins and use tape to secure it.
It is recomended to rub the cpu on a flat surface. I doubt using tools would do a good job...
Yeah, even better than the card spacer.
 

hat

Enthusiast
Joined
Nov 20, 2006
Messages
18,527 (4.58/day)
Likes
3,160
Location
Ohio
System Name Starlifter :: Dragonfly
Processor i5 2400 :: Athlon II x4 630
Motherboard MSI H67-G43-B3 :: GIgabyte GA-770T-USB3
Cooling Corsair H70 :: Thermaltake Big Typhoon
Memory 4x2GB DDR3 1333 :: 2x1GB DDR3 1333
Video Card(s) 2x PNY GTX1070 :: GT720
Storage Plextor M5s 128GB, WDC Black 500GB :: Mushkin Enhanced 60GB SSD, WD RE3 1TB
Display(s) Acer P216HL HDMI :: None
Case Antec SOHO 1030B :: Old White Full Tower
Audio Device(s) X-Fi Titanium Fatal1ty Pro - iLive IT153B Soundbar (optical) :: None
Power Supply Corsair CX600w :: Unknown
Software Windows 10 Pro - Plex Server on Dragonfly
Benchmark Scores >9000
#9
I don't have the plastic the cpu came in anymore. So I should clamp the flast surface in the vice and grind the cpu over the surface on it?
 
Joined
Sep 25, 2006
Messages
2,312 (0.56/day)
Likes
670
Location
Norn Iron
Processor Q9550 @3.8
Motherboard Asus Maximus Extreme
Cooling Custom water cooling
Memory 4GB Patriot Viper DDR3 1600MHz
Video Card(s) 2x HD4870 512MB
Storage 2x 500GB
Display(s) 3x LG L226WTQ 22" Widescreen LCD
Case Modded TJ07
Audio Device(s) On board
Power Supply PC P&C Silencer 750
Software Windows 7 Ultimate
#10
If using a vice you would need to make sure the jaws are square so that the CPU will not fall out of the vice when you apply pressure.....I still would not do this though.
 
Joined
Aug 31, 2006
Messages
452 (0.11/day)
Likes
37
Location
UK
Processor Intel® Core™ 2 Quad Q6600 Quad Core Processor(2.4GHz,8MB Cache,1066MHz)
Motherboard ASUSTeK - P5N-E - SLI nForce 650i SLI(C55) - ATX
Cooling TRUE with Xilence Red Wing 120mm fan
Memory OCZ 4GB (2x2GB) DDR2 800Mhz/PC2-6400 GOLD XTC
Video Card(s) Sapphire HD3870 XT 512MB Arctic Cooling Acellero S1 Rev. 2
Storage Seagate ST3500320AS 500GB SATA II 7200rpm 32MB Cache
Display(s) HANNS-G HU196D 19"
Case Antec 1200
Audio Device(s) 5.1 High Definition onboard sound card - 6 Channel Cinema sound
Power Supply 550W PSU
Software Windows Vista Home Premium 32bit
Benchmark Scores 10713 3DMark06 - No overclocking on anything
#11
I don't have the plastic the cpu came in anymore. So I should clamp the flast surface in the vice and grind the cpu over the surface on it?
Personally, I wouldn't put my CPU in a vice, however careful I was feeling that day.

I'd tape the sandpaper down, put on some thin surgical gloves and rub the CPU over the sandpaper. (Gloves to stop you sanding your fingers!!)

Perhaps use some polystrene or something to hold the CPU with? Should be gentle enough to avoid bending pins, but firm enough to hold it steady. Might want to cut out a small slot for the CPU.

Also, check out this thread: http://forums.techpowerup.com/showthread.php?t=86602
 
Joined
May 16, 2007
Messages
2,355 (0.61/day)
Likes
237
Location
Nova Scotia, Canada
System Name Main Rig
Processor Intel Core i7 4770K De-lidded 4.4GHz 1.24v
Motherboard MSI Z87-GD65 Gaming
Cooling NZXT Kraken X61
Memory 8GB(2x4GB) DDR3-1600 CL8 Crucial Ballistx Tracer Tactical
Video Card(s) XFX AMD Radeon Fury X
Storage 120GB Samsung 840 - 250GB 840 EVO - 640GB WD Black - 2TB Seagate
Display(s) LG 27" 4K Freesync IPS - LG 29" Ultrawide 21:9
Case Fractal Design Arc Midi R2
Audio Device(s) Onboard - Focusrite Scarlett 2i2
Power Supply Corsair 650TX
Software Windows 10 64Bit
#12
I lapped my PII last weekend. I just tapped the sandpaper down and held the cpu. I was worried about the pins too, but was surprised that I could hold it very sturdy with pressure and have the pins not bend.
 

erocker

Senior Moderator
Staff member
Joined
Jul 19, 2006
Messages
42,375 (10.17/day)
Likes
18,020
Processor Intel i7 8700k
Motherboard Gigabyte z370 AORUS Gaming 7
Cooling Water
Memory 16gb G.Skill 4000 MHz DDR4
Video Card(s) Evga GTX 1080
Storage 3 x Samsung Evo 850 500GB, 1 x 250GB, 2 x 2TB HDD
Display(s) Nixeus EDG27
Case Thermaltake X5
Power Supply Corsair HX1000i
Mouse Zowie EC1-B
Software Windows 10
#13
Don't worry about bending the pins. You want to use light pressure when lapping it anyways, let the weight of the processor do the work.
 
Joined
Aug 16, 2007
Messages
7,181 (1.90/day)
Likes
720
#14
when sanding get a small cuboid block of wood and wrap the sand paper around it and then hold the cpu in your hand and sand away

dont rub the cpu on the paper do the opposite and move the paper


the marked section is the sand/glass paper
just tear a bit off a big sheet and then replace when it starts to wear away or tear

apply as little or as much pressure as needed "in this job there is no pressure... in brazil there is pressure to win world cup"
 

nafets

New Member
Joined
Jul 26, 2008
Messages
611 (0.18/day)
Likes
133
#15
when sanding get a small cuboid block of wood and wrap the sand paper around it and then hold the cpu in your hand and sand away

dont rub the cpu on the paper do the opposite and move the paper


the marked section is the sand/glass paper
just tear a bit off a big sheet and then replace when it starts to wear away or tear

apply as little or as much pressure as needed "in this job there is no pressure... in brazil there is pressure to win world cup"
This is a poor way of lapping, as your contact sanding surface (a wood block) isn't anywhere near flat.

You should be using an extremely flat (or as close to it as possible), stationary sanding surface, so your lapped surface (the CPU) ends up flatter than it was before.

Try using old storm windows, large untextured glass cutting boards, large glass mouse pads, even an old mirror.

Securely tape your sandpaper to the glass surface (and the glass surface to a table, if it's not stationary on it's own), and lap away.

PS. There should never be a thought or action that includes the words "CPU" and "vice" in the same instance. Just give up on that idea if you value your processor at all...
 
Last edited by a moderator:

1Kurgan1

The Knife in your Back
Joined
Dec 8, 2008
Messages
10,412 (3.16/day)
Likes
2,391
Location
Duluth, Minnesota
System Name My Comp | Fiancees Comp
Processor i7 5820k @ 4.6Ghz 1.285v| i5 2500k
Motherboard MSI x99 SLI Plus | AsRock Z77 Pro 3
Cooling Watercooled
Memory 16GB DDR4 2400 @ 2666 | 12GB DDR3 1600
Video Card(s) AMD R9 290x | MSI 5850 OC
Storage 128gb SSD + 2x 2TB | 2TB
Display(s) Asus 27" LCD | 25" Hanns G
Case CM Storm | CM Elite 430
Audio Device(s) Creative Recon 3D PCIe
Power Supply Enermax Galaxy 1250W | Rosewill 630w
Mouse Logitech G700s | Logitech G100s
Keyboard Logitech G901 | Logitech G105
Software Win 8.1 Ultimate x64 | Win 8.1 Ultimate x64
Benchmark Scores 3D Mark - Fire Strike Extreme - 4403
#16
I don't have the plastic the cpu came in anymore. So I should clamp the flast surface in the vice and grind the cpu over the surface on it?
Yes, I don't think anyone got you clearly on this one. If you don't have anything stationary or are worried about whatever you use moving. Then take that block of wood (just an example) put sandpaper around it. Then clamp that wood in the vice so you know it isn't moving and run the processor over that sandpaper.
 
Joined
Aug 30, 2006
Messages
6,374 (1.55/day)
Likes
983
System Name ICE-QUAD // ICE-CRUNCH
Processor Q6600 // 2x Xeon 5472
Memory 2GB DDR // 8GB FB-DIMM
Video Card(s) HD3850-AGP // FireGL 3400
Display(s) 2 x Samsung 204Ts = 3200x1200
Audio Device(s) Audigy 2
Software Windows Server 2003 R2 as a Workstation now migrated to W10 with regrets.
#17
Very strong advice:

Clamp the sanding surface (paper). Best thing is to tape sandpaper (actually, it isnt sand paper at all but very fine grit) to a piece of glass. You can even tape it to the WINDOW, and lap in the vertical direction.

Put your CPU in the black insulating foam (to protect the pins), and move the CPU over the gritpaper. Move the SMALLER item over the larger flat surface to ensure the sanding is flat.

It is wrong to move the LARGER corkblock over the CPU. That will definitely result in rounded corners over the CPU.
 

hat

Enthusiast
Joined
Nov 20, 2006
Messages
18,527 (4.58/day)
Likes
3,160
Location
Ohio
System Name Starlifter :: Dragonfly
Processor i5 2400 :: Athlon II x4 630
Motherboard MSI H67-G43-B3 :: GIgabyte GA-770T-USB3
Cooling Corsair H70 :: Thermaltake Big Typhoon
Memory 4x2GB DDR3 1333 :: 2x1GB DDR3 1333
Video Card(s) 2x PNY GTX1070 :: GT720
Storage Plextor M5s 128GB, WDC Black 500GB :: Mushkin Enhanced 60GB SSD, WD RE3 1TB
Display(s) Acer P216HL HDMI :: None
Case Antec SOHO 1030B :: Old White Full Tower
Audio Device(s) X-Fi Titanium Fatal1ty Pro - iLive IT153B Soundbar (optical) :: None
Power Supply Corsair CX600w :: Unknown
Software Windows 10 Pro - Plex Server on Dragonfly
Benchmark Scores >9000
#18
Cool, so all I have to do is look like an idiot for a few hours with sandpaper taped to my window and I'll be good to go.
 

1Kurgan1

The Knife in your Back
Joined
Dec 8, 2008
Messages
10,412 (3.16/day)
Likes
2,391
Location
Duluth, Minnesota
System Name My Comp | Fiancees Comp
Processor i7 5820k @ 4.6Ghz 1.285v| i5 2500k
Motherboard MSI x99 SLI Plus | AsRock Z77 Pro 3
Cooling Watercooled
Memory 16GB DDR4 2400 @ 2666 | 12GB DDR3 1600
Video Card(s) AMD R9 290x | MSI 5850 OC
Storage 128gb SSD + 2x 2TB | 2TB
Display(s) Asus 27" LCD | 25" Hanns G
Case CM Storm | CM Elite 430
Audio Device(s) Creative Recon 3D PCIe
Power Supply Enermax Galaxy 1250W | Rosewill 630w
Mouse Logitech G700s | Logitech G100s
Keyboard Logitech G901 | Logitech G105
Software Win 8.1 Ultimate x64 | Win 8.1 Ultimate x64
Benchmark Scores 3D Mark - Fire Strike Extreme - 4403
#19
Be careful up on a window, since it might be hard to keep equal pressure. It's harder to do that on a vertical surface than it is on a horizontal surface. Thats why you will see autobody shops always sanding on horizontal surfaces. Would probaby be a better bet to tape it down to a table or desk, plus then you can sit while you work!