10.080 inch HeatSinkUSA F-5 performance - Page 2

Bksabath · 2nd June 2011, 03:11 PM

Small curvature on sinks without heat spreaders would not matter much
But you could ceck with a straigt edge (like stanley knife blade) shine same light on the back of it and have a look.

To cek the whole sink you need some sort of realy flat surface Glass /Granite and a bit of oily ink rub the sink on the surface and the ink shows the hi spots.

Bill Fuss · 3rd June 2011, 04:22 AM

The whole heatsink doesn't need to be perfectly flat, just where the fet sits. A good mill file will get you there with no trouble, just keep it clean while you are working it. Then you can polish it to perfection if you would like.

Best, Bill

Russellc · 3rd June 2011, 04:27 AM

Quote:

Originally Posted by Dmatuszak

Russell,
Where did you get those kerafols?
D

member zhoufang right here on DIYaudio!

Russell

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2nd June 2011, 03:11 PM	#11
Bksabath diyAudio Member Join Date: Dec 2007	Small curvature on sinks without heat spreaders would not matter much But you could ceck with a straigt edge (like stanley knife blade) shine same light on the back of it and have a look. To cek the whole sink you need some sort of realy flat surface Glass /Granite and a bit of oily ink rub the sink on the surface and the ink shows the hi spots.

3rd June 2011, 04:22 AM	#12
Bill Fuss RIP Join Date: Oct 2005 Location: Central Florida	The whole heatsink doesn't need to be perfectly flat, just where the fet sits. A good mill file will get you there with no trouble, just keep it clean while you are working it. Then you can polish it to perfection if you would like. Best, Bill