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Old 04-29-2009, 02:02 AM #1
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Default F/S Titanium Chunk

I'm selling a 50mm. diameter by 30mm. high peice of titanium. It has been cleared and C'bored for a 6mm or 1/4'' screw. Titanium is notorious for its heat dissipation capabilities.


I work in mould-making and I have a couple of other chunks too, but they have a .500'' hole thru them, so an axiz module would flop around in them(not much good unless you have a custom made module bigger than an axiz).*

This would be a perfect peice of material for a custom heat sink. *If I had a lathe I wouldn't be selling it.
I'm asking $20.00 plus shipping.

OR

The prospective buyer is likely to have a lathe, and I will trade for machining services on my custom heatsink.

For information on Titanium, read these:

http://backoftheenvelope.blogspot.co...gear-knob.html

http://www.accessmylibrary.com/coms2...6-20168685_ITM

http://www.ocztechnology.com/product..._ready_edition 4th last paragraph
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Old 04-29-2009, 02:27 AM #2
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Default Re: F/S Titanium Chunk

Next to a DX pen for size comparison/scale.
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Old 04-29-2009, 02:39 AM #3
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Default Re: F/S Titanium Chunk

It would probably be possible to make a very thin copper/aluminum sleeve to make an aixiz module fit tightly in the other heatsinks. I am sure someone on the forum will have a good use for it. Good luck on selling *
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Old 04-29-2009, 02:55 AM #4
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Default Re: F/S Titanium Chunk

That's utter BS.
Titanium is one of the worst heat conducters.
If I remember correctly, it is the 3rd worst heat conducting metal.

If you are going to sell things, at least tell the truth.
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Old 04-29-2009, 03:06 AM #5
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Default Re: F/S Titanium Chunk

Well in that case, good luck on selling your paperweight
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Old 04-29-2009, 03:08 AM #6
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Default Re: F/S Titanium Chunk

Quote:
Originally Posted by Spyderz20x6
That's utter BS.
Titanium is one of the worst heat conducters.
If I remember correctly, it is the 3rd worst heat conducting metal.

If you are going to sell things, at least tell the truth.
Not trying to fuel the fire, but Spyderz is right, titanium is a terrible heat conductor. Aluminum conducts heat ten times better than titanium.
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Old 04-29-2009, 03:39 AM #7
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Default Re: F/S Titanium Chunk

Quote:
Originally Posted by Spyderz20x6
That's utter BS.
Titanium is one of the worst heat conducters.
If I remember correctly, it is the 3rd worst heat conducting metal.

If you are going to sell things, at least tell the truth.
Just curious, what's #1?
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Old 04-29-2009, 03:43 AM #8
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Default Re: F/S Titanium Chunk

Quote:
Originally Posted by randomlugia
[quote author=Spyderz20x6 link=1240970566/0#3 date=1240973734]That's utter BS.
Titanium is one of the worst heat conducters.
If I remember correctly, it is the 3rd worst heat conducting metal.

If you are going to sell things, at least tell the truth.
Just curious, what's #1? [/quote]
Silver

#2 is copper...
#3 is gold...
#4 is aluminum...
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Old 04-29-2009, 03:44 AM #9
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Default Re: F/S Titanium Chunk

Quote:
Originally Posted by lordoflasers
Titanium is notorious for its heat dissipation capabilities.
Quote:
Widely known, especially for something bad
Explained right there in the first post
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Old 04-29-2009, 04:21 AM #10
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Default Re: F/S Titanium Chunk

Quote:
Originally Posted by Jimmymcjimthejim
[quote author=lordoflasers link=1240970566/0#0 date=1240970561]Titanium is notorious for its heat dissipation capabilities.
Quote:
Widely known, especially for something bad
Explained right there in the first post [/quote]

Epic fails are funny! ;D

Stop making me want a silver heatsink syderz!
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Old 04-29-2009, 04:29 AM #11
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Default Re: F/S Titanium Chunk

Quote:
Originally Posted by Jimmymcjimthejim
[quote author=lordoflasers link=1240970566/0#0 date=1240970561]Titanium is notorious for its heat dissipation capabilities.
Quote:
Widely known, especially for something bad
Explained right there in the first post [/quote]
;D
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Old 04-29-2009, 04:12 PM #12
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Default Re: F/S Titanium Chunk

Quote:
Originally Posted by Eku
[quote author=Jimmymcjimthejim link=1240970566/0#8 date=1240976678][quote author=lordoflasers link=1240970566/0#0 date=1240970561]Titanium is notorious for its heat dissipation capabilities.
Quote:
Widely known, especially for something bad
Explained right there in the first post [/quote]

Epic fails are funny! *;D

Stop making me want a silver heatsink syderz!
[/quote]


I believe diamond is better, if not just as good as silver AND it is stronger, so you won't dent it ! silver is quite soft. So if you can afford $10,000 of diamond, you can get a diamond heatsink, and it would make a great lens too ! ;D

-Adam
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Old 04-29-2009, 05:21 PM #13
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Default Re: F/S Titanium Chunk

Yeah, diamond is expensive.

That's why you look for pyrolytic graphite instead.

Just remember that you have mount it the right way, because it is only a good heat conductor in one plane, where it performs much like diamond. When you want to get rid of a lot of heat, you will want to drill it for small plugs that can conduct heat between layers of the plane.

If you can get copper-tungsten alloy, it's an excellent conductor, but more importantly, it has a very low coefficient of expansion, and is a pretty damn strong material. Gold coat it for environmental tolerance and easy press fitting (gold is soft, so it will yield). Supposedly, it machines easily, but I suspect that means it machines well with a hard enough bit.

Both are less expensive than silver, but more expensive than aluminium.
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Old 04-29-2009, 05:49 PM #14
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Default Re: F/S Titanium Chunk

Quote:
Originally Posted by Diachi
[quote author=Eku link=1240970566/0#9 date=1240978902][quote author=Jimmymcjimthejim link=1240970566/0#8 date=1240976678][quote author=lordoflasers link=1240970566/0#0 date=1240970561]Titanium is notorious for its heat dissipation capabilities.
Quote:
Widely known, especially for something bad
Explained right there in the first post [/quote]

Epic fails are funny! *;D

Stop making me want a silver heatsink syderz!
[/quote]


I believe diamond is better, if not just as good as silver AND it is stronger, so you won't dent it ! silver is quite soft. So if you can afford $10,000 of diamond, you can get a diamond heatsink, and it would make a great lens too ! *;D

-Adam[/quote]
Well, diamond only conducts well if it is in particles.
You know, like diamond dust?
That is why they have diamond thermal compound.

Nevertheless, I was talking about metals...
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Old 04-29-2009, 07:41 PM #15
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Default Re: F/S Titanium Chunk

Just curious but if copper is so good at heat conductivity, why aren't we seeing more lasers using it in heatsinks? or is copper expensive?
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Old 04-29-2009, 07:47 PM #16
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Default Re: F/S Titanium Chunk

Quote:
Originally Posted by AdamR
Just curious but if copper is so good at heat conductivity, why aren't we seeing more lasers using it in heatsinks? or is copper expensive?
Copper is a little more expensive, yes, but that is not the main problem. From what I've heard Copper:
1. Is VERY hard to machine. I always see members complaining about how many drill bits they break from drilling copper.
2. Oxidizes fairly easily, ruining the finish.
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