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- Feb 12, 2003
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Thx for the rationale. I'm in the process of designing a custom case, and was thinking of reducing the size, but now I may not.
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Originally posted by Graystar
Lapping....
First, it is well known in the tool-sharpening industry that using such a procedure as he described will produce a convex surface. The reason is that when the block moves over the paper, the front edge will grab more than the center or rear. He even noted that this would occur. However, he didn't make the connection that his surface was not flat. Woodworkers have long known that in order to get a plane perfectly flat, you must push it in one direction only, *then lift it off the paper* to return to the starting position, then push forward again. Anything else will not get you a flat surface.
Originally posted by Billa
follow the procedure that Greystar described above
its the same that I use
one direction, lift and return - never rotate
close to impossible to actually get it flat by hand, I never have
(and I can, and do, inspect for such)
be cool
that procedure is really good for making a hump right in the center of your hsf or wb
Maximus Nickus said:
Washing up liquid is that Greeny slimy solution that is used to clean up your dishes. It is used to provide a smoother surface to stop the Heatsink from sticking, providing a flatter smoother end product.
You could use Brass-O (I use it myself) to polish up the bottom of the Heatsink / Waterblock, but I mainly use it for looks. You can certainly do without it because it doesn't affect performance of a newly lapped Heatsink.
If the base has tarnished however it will certainly help performance.
Good Luck,
M_N
Pressures
When building an effective cooling system you have to take into account the affects pressure has on a case, positive pressure (more airflow entering) will create a pressure of cool air and less dust will accumulate, however negative pressure (more airflow exhausting) with be exhausting more air than is available and thus as a result increases the dust level.
Therefore positive pressure is often the most preferred.
To achieve this simply have more air arriving than leaving!