benefits of tapping heatsinks - The Planted Tank Forum
 
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post #1 of 7 (permalink) Old 08-01-2011, 06:43 PM Thread Starter
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benefits of tapping heatsinks

I've just been using thermal adhesive to mount my LEDs to heatsinks. Is there a benefit to tapping?


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post #2 of 7 (permalink) Old 08-01-2011, 06:50 PM
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What? You mean besides the pain and unholy suffering it takes to do it in the first place?

I've heard heat transfer is the best using thermal grease and obviously the ease of removing stars. That's all I've heard.

Personally, I just like the look. I think it's more 'professional' but I have nothing against adhesive. The thermal pads I wouldn't personally use.


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post #3 of 7 (permalink) Old 08-01-2011, 07:05 PM
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Zero chance of an adhesive related failure, ease of replacement, better conductivity... Really the only drawback is cost of tools and fasteners and time compared to adhesive.
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post #4 of 7 (permalink) Old 08-01-2011, 07:06 PM
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I've tapped/screwed and used epoxy. Tapping/screwing the heat sink makes future led removal easy and thermal paste is slightly more efficient than epoxy for heat transfer, but you're essentially doing all the extra work upfront. I'd rather save that time by using epoxy instead. I've found that the epoxy method is not as "permanent" as some people claim. I've been able to pop epoxied leds off of a heat sink with relative ease, using a blunt chisel and a dead blow hammer. To each his own- I guess.
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post #5 of 7 (permalink) Old 08-01-2011, 07:40 PM
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Quote:
I've been able to pop epoxied leds off of a heat sink with relative ease, using a blunt chisel and a dead blow hammer
Bwahahaha!

I did a double take when reading that.
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post #6 of 7 (permalink) Old 08-01-2011, 08:41 PM Thread Starter
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Yeah, I've popped off LEDs I epoxied down without too much trouble.

I agree, it looks nice though.


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post #7 of 7 (permalink) Old 08-01-2011, 09:24 PM
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Agreed with the above.

On 3w type LEDs (XPG, XRE, etc) I personally use the Bergquist Bond-Ply thermal tape, but anything bigger than that gets thermal epoxy, which for our purposes will work just fine.


The only time I bother with screws is IF the heatsink comes already drilled/tapped, and the holes are where I want them.

Nothing wrong with actually doing this though, lots of benefits to it as mentioned above.


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