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Discussion Starter · #1 ·
We have a Diamond Turner at my school, would it be a cool idea to lap the CPU with that? It's extremely accurate, and takes 1/1000" passes and does optical quality finishes. What do you think?





This is the machine that I was referring to
 

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Just make sure the CPU is level while lapping. You probably have to lap it yourself first as well.
 

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Well seeing as they are used for manufacturing in high-precision areas like optics for telescopes, I would think it would work great....but ideally you'd do the same to the heatinks/waterblock as well.

Also there's a point of diminishing returns and I'm pretty sure you won't see a large difference between conventional lapping and an extreme surface finish.
 

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Discussion Starter · #7 ·
Well it would be level. I can make sure of it. If I do go through of it, I would show pictures of course.
I would try it with a cheap processor first though...*hint*
 

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Discussion Starter · #8 ·
Bump
 

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Don't bump, go do it. Nao.
 

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definitely use a cheap processor first. I have a surface grinder that will take 1 ten thousandth at a time and I've been tempted but man, kinda scary. its easy to drop it too far too fast. I've scrapped many parts that way. the first touch of the wheel to the surface is the trick. also would be good to know the thickness of the cover over the cores
 

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Discussion Starter · #11 ·
Quote:


Originally Posted by samfreese
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definitely use a cheap processor first. I have a surface grinder that will take 1 ten thousandth at a time and I've been tempted but man, kinda scary. its easy to drop it too far too fast. I've scrapped many parts that way. the first touch of the wheel to the surface is the trick. also would be good to know the thickness of the cover over the cores

Well this diamond grinder, it takes 5 ten thousandth of a pass at MAX. So this is going to be taking very little off at a time
 

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Quote:


Originally Posted by kaivorth
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Well this diamond grinder, it takes 5 ten thousandth of a pass at MAX. So this is going to be taking very little off at a time

That's why I recommend you prelap it.
 

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Sounds like a really cool option. Probably the most difficult part will be securing the CPU to the bench/base or whatever holds it in place while the machine does its cutting.
 

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Quote:


Originally Posted by BikePilot
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Sounds like a really cool option. Probably the most difficult part will be securing the CPU to the bench/base or whatever holds it in place while the machine does its cutting.

Indeed, If you don't have it square to the cutting head all you get is a flat plane that doesn't match up with your cooler.
 

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Discussion Starter · #17 ·
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Originally Posted by t_russell View Post
Indeed, If you don't have it square to the cutting head all you get is a flat plane that doesn't match up with your cooler.
If I do go through with it, I would be lapping the Heatsink with it as well. And what do you mean by sqaure to the cutting head..? If I lap both as flat as possible, whats the problem?

I just don't want to break the tool. It is about $3000 a toolhead I heard. It's real diamond
 

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Discussion Starter · #19 ·
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Originally Posted by samfreese
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do you have a pic of this piece of machinery? a diamond wheel for a surface grinder is nowhere near three grand and it would be industrial diamond anyway. the problem im having would be securing it down. I can't think of a good solution

I can maybe get one tomorrow. I'm talking about JUST the tool, not the whole machine. The Diamond insert itself is like 3k I believe.
We had it donated to us. Some guy didn't use it, and it was cheaper to donate than to sell it. He gets a break from his taxes or something.
 

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Ok, I think I have an idea of what you are talking about. Wouldn't that turn the processor, though? It looks like it works like a lathe. Seems like it would be kinda scary turning a processor at ~1500RPM's against a diamond tip. I have a surface grinder, which the processor would sit flat on, and the table moves back and forth underneath a grinding wheel. I thought that's kind of what you were talking about. My fault.
 
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