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BIG lab style heat sinks (Copper)

Seoul_lasers

Seoul_lasers

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I am looking for 3 large lab style copper heatsinks 8-10in long x 2.5" thick for a lab build. These have to be able to house an axiz module.

Anyone making custom labby heatsinks out of copper? I know Aluminum is more common
but anyone interested?
 





Uranium

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That's going to cost two and a half sh*tloads. Copper blocks that size are not cheap, and machining them into a heat sink is not easy, even for a cnc.

Try looking in old stereo amplifiers. They often have huge aluminum heat sinks. I found one that was 1 foot by 6 in by 4 in. Or try making a heatsink out of 1/8" copper sheet, solder, and heat pipes.
 
Byrnz93

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I'm pretty sure FlaminPyro makes custom heatsinks.

It will cost a bit though, since it is copper.
 
kevinmassey

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Yeah, like uranium said these will probobly cost a ton like 60-70$ a piece atleast... Just go with a finned aluminum heatsink. I'm sure the "maxsink" flaminpyro sells will work for almost any diode.
They're only 25$
 
Prototype

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Why do you need them so long, I can't fathom any reasonable explanation.
 
Pontiacg5

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There is no reason to use so much copper, that is insanely expensive! Aluminum is fairly close to copper as far as thermal capacity. With a small heatsink copper would have an advantage, with something that big it is unnecessary!

Copper is not at all hard to machine on my equipment. The problem is cleaning the swarf and chips up. That stuff will slide right through a glove and slice you to pieces! Even worse is having to debur copper stuff after it has been machined. My hands will never be the same after that :undecided:
 
Benm

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Lets not get things mixed up here:

For two heatsinks of equal size, one made out of copper will have a much larger thermal capacity. This is mostly explained by coppers greater density: its heavier, so there is more material/mass to heat up.

This does not matter for continous operation though: the only thing that matters there is thermal resistance, and that varies mostly with size and surface area, and not that much with thermal conductivity of the metal used.

If you made two heatsinks for equal -weight- instead of size, the one made from aluminium would be superior in almost any application imaginable. This is also the reason power lines are often made from aluminium: its conductivity is lower than that of copper, but using thicker wires makes sense since their mass (and cost) remains lower than the copper equivalent.
 
Seoul_lasers

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Never mind, I just got some CPU heat sinks that are plated aluminum with a fan. They are huge and I got them for $5ea or 7500Won each here in Korea
 
KGB_Productions

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I'm looking for a some lab style heatsinks for my scanners. They don't need to be copper but I have looked everywhere and not found exactly what I need yet. Does anyone know some places that I can look?

I know about z-bolt and MODWERX but they aren't exactly what I need.........any ideas?
It needs to be able to bolt directly to a table also, something like this...... (but NOT $500) and NOT that maxsink thing.
PICT0072_.jpg




Thanks,
-Brooks
 
Prototype

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If you can figure out your own mount, I know ehgemus has made some heatsinks that look really similar to that one, KGB.

Edit: You can just drill into the side and use an angle bracket, and ehgemus has incredibly fair prices.

1748-101-1044.jpg


1747-101-1045.jpg
 
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KGB_Productions

KGB_Productions

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I have seen those but thats nothing special, No offense to Andy :p.


I found these also, from microlaserlabs, aka PAT.

These come ready to bolt to a table.







 
Seoul_lasers

Seoul_lasers

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hmm, rather interesting looking setup there.
Not sure how good this will be to radiate heat away from the diodes, esp those 445nm diodes.
Personally radial is the way to go.
 
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