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[How To] Delid your Ivy Bridge CPU with out a Razor Blade! - Page 9

post #81 of 1399
Quote:
Originally Posted by dr/owned View Post

I have a question for guys that have done this:

If you had a huge wooden block, do you think you could push the IHS off without using a hammer....human strength alone?

I think my twist strategy in my fixture above might not work...from the original video it sounded like a pretty hard hammer hit.
Well, if you are pushing the block with your body weight then that sounds like a bad idea because body weight would most likely push too quickly like falling and you could possibly just ruin it all.
If you are using your hand as a hammer, that might not be too pleasant but you can try if you want, it's your hand. xD

Find another wooden block or another object that you can use as a hammer and try it that way or ask a friend/family member of course. Tire iron maybe.
post #82 of 1399
Quote:
Originally Posted by iwalkwithedead View Post

Quote:
Originally Posted by dr/owned View Post

I have a question for guys that have done this:

If you had a huge wooden block, do you think you could push the IHS off without using a hammer....human strength alone?

I think my twist strategy in my fixture above might not work...from the original video it sounded like a pretty hard hammer hit.
Well, if you are pushing the block with your body weight then that sounds like a bad idea because body weight would most likely push too quickly like falling and you could possibly just ruin it all.
If you are using your hand as a hammer, that might not be too pleasant but you can try if you want, it's your hand. xD

Find another wooden block or another object that you can use as a hammer and try it that way or ask a friend/family member of course. Tire iron maybe.

The question is in regards to the fixture above. I designed it so you can still put your cpu between the 2 halves and hit it with a hammer (where the bottom piece is replacing the vise), but I was also thinking it would be possible to grip both halves in your hand and twist the IHS off like a soda bottle cap (in case someone didn't have a hammer). But it sounds like the glue is too strong for a human to be able to twist hard enough.
post #83 of 1399
Quote:
Originally Posted by dr/owned View Post

The question is in regards to the fixture above. I designed it so you can still put your cpu between the 2 halves and hit it with a hammer (where the bottom piece is replacing the vise), but I was also thinking it would be possible to grip both halves in your hand and twist the IHS off like a soda bottle cap (in case someone didn't have a hammer). But it sounds like the glue is too strong for a human to be able to twist hard enough.

I think that I know what you're saying but I just can't picture it in my mind for me to understand for some reason. My brain just isn't with it or something.

As for twisting it off, the glue is probably a little to hard to do that but I don't know if that would work either because twisting usually applies pressure, which pressure pushing down like that while twisting might do some damage as well but it's all possible nothing solid.

I personally would try to stick with the hammer/wood idea.
post #84 of 1399
Quote:
Originally Posted by dr/owned View Post

The question is in regards to the fixture above. I designed it so you can still put your cpu between the 2 halves and hit it with a hammer (where the bottom piece is replacing the vise), but I was also thinking it would be possible to grip both halves in your hand and twist the IHS off like a soda bottle cap (in case someone didn't have a hammer). But it sounds like the glue is too strong for a human to be able to twist hard enough.

One side has to be really strong hence vice. With the happen what you are trying to do is not peal the silicone but rip it. Trust me the method is so safe a alternative is pointless. Your wood method would actually be worse. If you hit it too hard the bottom components of the cpu will touch the wood and maybe rip out.

Edit:

My Pictures:







Edited by ZealotKi11er - 3/30/13 at 7:24pm
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post #85 of 1399
Quote:
Originally Posted by dr/owned View Post

The question is in regards to the fixture above. I designed it so you can still put your cpu between the 2 halves and hit it with a hammer (where the bottom piece is replacing the vise), but I was also thinking it would be possible to grip both halves in your hand and twist the IHS off like a soda bottle cap (in case someone didn't have a hammer). But it sounds like the glue is too strong for a human to be able to twist hard enough.

Let's talk about both methods.

When shearing the adhesive in a linear motion, you want the pcb to either stop before the die contacts the ihs, or be able to ride up the edge of the die and pop off. I don't think your fixture will allow this, so you'll need to be ultra careful to apply just the right amount of force.

Have you ever rounded a nut with a spanner? To twist the adhesive off, you are going to be placing the twisting force proportionally to the fit of the jig to the chip. The force is going to want to concentrate at the corners, and the closer the fit of the jig, the less the corners are going to have to flex to distribute the force back up the sides. You said you deliberately had the pockets machined out to allow some wiggle room and variance? That wiggle room is going to allow the jig to concentrate the force onto the corners of the board. The question is what will let go first, the board or the adhesive?

My plan with the twist was to use channel locks with strips of neoprene rubber with the theory that the rubber will absorb and distribute any point loads created by the unevenness of the plier-board interface.
post #86 of 1399
Quote:
Originally Posted by ZealotKi11er View Post

One side has to be really strong hence vice. With the happen what you are trying to do is not peal the silicone but rip it. Trust me the method is so safe a alternative is pointless. Your wood method would actually be worse. If you hit it too hard the bottom components of the cpu will touch the wood and maybe rip out.

I see a few problems with this method. a) You have to own a vise. b)You're pretty much guaranteed to mar the edges of the IHS. c)If you overtighten the vise you damage the IHS, if you undertighten you risk it flying out when you hit it. I really don't like that the top of the IHS is completely unsupported. It seems to be begging for it to flex slightly into a U shape when you hit it.

The purpose of my fixture is to make it impossible to screw up, and do it without needing a vise. . Because my fixture also conforms to the entire IHS and not just the top ledge, it also increases the surface area for the force to be distributed across.
Quote:
You said you deliberately had the pockets machined out to allow some wiggle room and variance?

When I say wiggle room, I mean .1mm. Intel's specs allow for variance in the package dimensions, and I wanted to make sure this fixture can be used with multiple cpu's.
Edited by dr/owned - 3/30/13 at 8:25pm
post #87 of 1399


This is my first delid. Pentium 4 lga775. I can't tell if that's TIM or solder. It was a ***** to separate. But it finally popped off. It looks like solder to me. I can't really scrape it off the die.
post #88 of 1399
Quote:
Originally Posted by Qlix View Post



This is my first delid. Pentium 4 lga775. I can't tell if that's TIM or solder. It was a ***** to separate. But it finally popped off. It looks like solder to me. I can't really scrape it off the die.

Solder for sure.
post #89 of 1399
Quote:
Originally Posted by Qlix View Post



This is my first delid. Pentium 4 lga775. I can't tell if that's TIM or solder. It was a ***** to separate. But it finally popped off. It looks like solder to me. I can't really scrape it off the die.

You see it in my picture too. Really hard to come off but even with so much hitting the chip was not damaged.
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post #90 of 1399
So the hardest part of that was separating the die from the ihs. Absolute cake to cut through the silicone. I am a little surprised it popped off though if that's solder.

One concern I have was with the flex in the pcb while prying off the ihs. Should I be concerned with ivy? I'm guessing the only reason there was so much flex was because of the solder
Edited by Qlix - 3/30/13 at 8:35pm
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