Quote Originally Posted by tastymannatees View Post
123 Bob What's interesting to me is that when thermalright came out with it's first heat pipe cooler I tested it on a 1cm synthetic die and performance was good but not great. When I put it on my 1 in die (whichs gives me pretty much what you see in system within about 10%) Temps dropped like 6 C. It had two inner heat pipes and two outer heat pipes I theorized at the time that the heat was just not able to spread to the outside pipes on a small die. This was a sink designed for an IHS.

You have just about 1 cm on center and it looks like the edges are taking the brunt of the pressure. I would think just from a casual look at things that even when these IHS are lapped they are lapped in a relaxed state and the central bubble is intact, in OWL's case the center is concave, but in any event the bends on the edges on both act as a reinforcement or stiffener to the IHS against pressure.

Just a thought, rather than lapping the IHS a solution might be to just file the edges to relieve the high points. Note the 77lb on Owl's edges my guess is your result will show the bulk of the pressure on edge also.
That is a good thought. I may try it. I'm wondering how much of the edge print is due to mounting the sink though. Do you know how quickly this stuff reacts to pressure? The process of screwing the mount down is rather quick compared to the time I let it sit clamped together. BTW, I left sample #1 clamped for 11 minutes. Sample #2 got 17 minutes. I thought this might prove interesting. Everything is fully noted on the envelope.

Anyone else going to test a lapped setup?

Regards,
Bob