- Joined
- May 24, 2023
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I think lapping truly flat surface is hard, because when you have truly flat surface the friction of the object with the emery paper is very high. So you need to move the object with very careful and precise force overcoming and fighting with high friction. Most of the time you end up applying the force in an unwanted way.
Another problem is the waste material between the surfaces. Ideally you should wash it away after each move - extremely impractical.
I actually think that the best way is to move the object with the longest possible stroke, because when is the object finaly steadilly moving on the abrasive surface, you can control the force the best.
BTW achieving perfect flatness is IMO not necessary at all, because at least the CPU I was preparing the cooler for is far from flat.
There is another way to test the flatness, when you have reflective or dark surface.
YOU CAN USE CREAM OR MILK instead of ink. I like to use coffee cream because it comes in little containers and you can always have some at hand, and if you will not use it for assessing flatness, you can just pour it in the coffee.
The disadvantage of the milk/cream is that because it is an emulsion, after certain depth you get no information about the layer thickness at all.
Delshay: you might first want to test the flatness of the GPU chip, before becoming too much obsessed with vapour chamber flatness.
Another problem is the waste material between the surfaces. Ideally you should wash it away after each move - extremely impractical.
I actually think that the best way is to move the object with the longest possible stroke, because when is the object finaly steadilly moving on the abrasive surface, you can control the force the best.
BTW achieving perfect flatness is IMO not necessary at all, because at least the CPU I was preparing the cooler for is far from flat.
There is another way to test the flatness, when you have reflective or dark surface.
YOU CAN USE CREAM OR MILK instead of ink. I like to use coffee cream because it comes in little containers and you can always have some at hand, and if you will not use it for assessing flatness, you can just pour it in the coffee.
The disadvantage of the milk/cream is that because it is an emulsion, after certain depth you get no information about the layer thickness at all.
Delshay: you might first want to test the flatness of the GPU chip, before becoming too much obsessed with vapour chamber flatness.
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