Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > Science & Lasers



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 07-27-2012, 01:45 PM #33
TheDukeAnumber1's Avatar
Class 3R Laser
 
Join Date: Jun 2012
Location: Illinois
Posts: 2,045
Rep Power: 2270
TheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond repute
TheDukeAnumber1 TheDukeAnumber1 is offline
Class 3R Laser
TheDukeAnumber1's Avatar
 
Join Date: Jun 2012
Location: Illinois
Posts: 2,045
Rep Power: 2270
TheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond repute
Default Re: Copper vs Aluminum vs Ect.

Quarter sized pump, is that including the motor? Also, are you making a white laser build? Very cool if you are.


__________________
“Absence of evidence isn't evidence of absence."
http://laserpointerforums.com/donations.htm
[SIZE="1"]“It is impossible that any ill should happen to the man who is beloved of the Lord; the most crushing calamities can only shorten his journey and hasten him to his reward. Ill to him is no ill, but only good in a mysterious form. Losses enrich him, sickness is his medicine, reproach is his honour, death is his gain. No evil in the strict sense of the word can happen to him, for everything is overruled for good. Happy is he who is in such a case. He is secure where others are in peril, he lives where others die.”—Spurgeon
TheDukeAnumber1 is offline   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 07-27-2012, 03:04 PM #34
Class 1M Laser
 
Join Date: Oct 2011
Posts: 162
Rep Power: 8
flare09 has a spectacular aura aboutflare09 has a spectacular aura aboutflare09 has a spectacular aura about
flare09 flare09 is offline
Class 1M Laser
 
Join Date: Oct 2011
Posts: 162
Rep Power: 8
flare09 has a spectacular aura aboutflare09 has a spectacular aura aboutflare09 has a spectacular aura about
Default Re: Copper vs Aluminum vs Ect.

yes i am going for the overkill here

and yes the whole pump fits in a quarter, i was thinking about upgrading to pump more but its slightly bigger, and if it moves to fast the water wont heat or cool enough.

i am going for a multicolor build yes. with an add-able spirograph
flare09 is offline   Reply With Quote
Old 07-27-2012, 03:14 PM #35
TheDukeAnumber1's Avatar
Class 3R Laser
 
Join Date: Jun 2012
Location: Illinois
Posts: 2,045
Rep Power: 2270
TheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond repute
TheDukeAnumber1 TheDukeAnumber1 is offline
Class 3R Laser
TheDukeAnumber1's Avatar
 
Join Date: Jun 2012
Location: Illinois
Posts: 2,045
Rep Power: 2270
TheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond repute
Default Re: Copper vs Aluminum vs Ect.

I really don't think you can have a pump that moves the water too fast since there are no phase changes in your to be system. It will just spread the heat quicker.
__________________
“Absence of evidence isn't evidence of absence."
http://laserpointerforums.com/donations.htm
[SIZE="1"]“It is impossible that any ill should happen to the man who is beloved of the Lord; the most crushing calamities can only shorten his journey and hasten him to his reward. Ill to him is no ill, but only good in a mysterious form. Losses enrich him, sickness is his medicine, reproach is his honour, death is his gain. No evil in the strict sense of the word can happen to him, for everything is overruled for good. Happy is he who is in such a case. He is secure where others are in peril, he lives where others die.”—Spurgeon
TheDukeAnumber1 is offline   Reply With Quote
Old 07-27-2012, 03:27 PM #36
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,144
Rep Power: 9321
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is online now
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,144
Rep Power: 9321
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Re: Copper vs Aluminum vs Ect.

Quote:
Originally Posted by TheDukeAnumber1 View Post
Aluminum forms an oxide on the surface with pretty bad thermal properties
Alumina has good thermal properties, sir. It is often used in thermal grease. Even if it wasn't, it's only 4 nanometers thick.

Quote:
Originally Posted by flare09 View Post
I would be running distilled deionized water... So there isn't really that much compression.
You mean no compression. Water doesn't compress, so you have zero temperature change when you apply or remove pressure from it.
__________________
A problem well stated is a problem half solved.
Cyparagon is online now   Reply With Quote
Old 07-27-2012, 03:44 PM #37
Class 1M Laser
 
Join Date: Oct 2011
Posts: 162
Rep Power: 8
flare09 has a spectacular aura aboutflare09 has a spectacular aura aboutflare09 has a spectacular aura about
flare09 flare09 is offline
Class 1M Laser
 
Join Date: Oct 2011
Posts: 162
Rep Power: 8
flare09 has a spectacular aura aboutflare09 has a spectacular aura aboutflare09 has a spectacular aura about
Default Re: Copper vs Aluminum vs Ect.

Quote:
Originally Posted by Cyparagon;
You mean [B
no[/B] compression. Water doesn't compress, so you have zero temperature change when you apply or remove pressure from it.
well, very little. should i run the next best thing if i want to go for the compression? amonia, or something safer...ethyl glycol?

and should i speed up the liquid then, increase pump pressure, tubing sizing and just go all out?
flare09 is offline   Reply With Quote
Old 07-27-2012, 06:26 PM #38
TheDukeAnumber1's Avatar
Class 3R Laser
 
Join Date: Jun 2012
Location: Illinois
Posts: 2,045
Rep Power: 2270
TheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond repute
TheDukeAnumber1 TheDukeAnumber1 is offline
Class 3R Laser
TheDukeAnumber1's Avatar
 
Join Date: Jun 2012
Location: Illinois
Posts: 2,045
Rep Power: 2270
TheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond repute
Default Re: Copper vs Aluminum vs Ect.

@Cyparagon
Relatively good, compared to Aluminum not really.
Aluminum = 237 W·m−1·K−1
Aluminum Oxide = 30 W·m−1·K−1
But yes the layer is so thin it's not worth worrying about.

@flare09
All liquids are conventionally not compressible. If your going with a liquid system go for a stable fluid with good heat capacity. If you really want compression you'll need a phase changing system.
__________________
“Absence of evidence isn't evidence of absence."
http://laserpointerforums.com/donations.htm
[SIZE="1"]“It is impossible that any ill should happen to the man who is beloved of the Lord; the most crushing calamities can only shorten his journey and hasten him to his reward. Ill to him is no ill, but only good in a mysterious form. Losses enrich him, sickness is his medicine, reproach is his honour, death is his gain. No evil in the strict sense of the word can happen to him, for everything is overruled for good. Happy is he who is in such a case. He is secure where others are in peril, he lives where others die.”—Spurgeon
TheDukeAnumber1 is offline   Reply With Quote
Old 07-27-2012, 07:49 PM #39
Blutquell's Avatar
Class 1M Laser
 
Join Date: Aug 2011
Posts: 103
Rep Power: 8
Blutquell has a spectacular aura aboutBlutquell has a spectacular aura aboutBlutquell has a spectacular aura about
Blutquell Blutquell is offline
Class 1M Laser
Blutquell's Avatar
 
Join Date: Aug 2011
Posts: 103
Rep Power: 8
Blutquell has a spectacular aura aboutBlutquell has a spectacular aura aboutBlutquell has a spectacular aura about
Default Re: Copper vs Aluminum vs Ect.

Seems you guys like geeking out on thermal conductivity

Yes, we all know the numbers don't lie, and know copper overall manages heat better than just about everything else.
I was thinking however, how about the mixing of metals? If any sort of combination would pose an awkward benefit.

A copper module and a copper heatsink
A copper module and an aluminium heatsink
An aluminium module and a copper heatsink

An aluminium module and an aluminium heatsink?

Or am i just trying to find five sides in a square here and copper-copper is the obvious winner? I think i am, since i have never seen combinations in finished products, which may very well hide a reason behind it.
I don't know enough on the subject to draw definite conclusions tho lol.
Blutquell is offline   Reply With Quote
Old 07-27-2012, 08:16 PM #40
BShanahan14rulz's Avatar
Class 3B Laser
 
Join Date: Dec 2009
Posts: 3,175
Rep Power: 264
BShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond repute
BShanahan14rulz BShanahan14rulz is offline
Class 3B Laser
BShanahan14rulz's Avatar
 
Join Date: Dec 2009
Posts: 3,175
Rep Power: 264
BShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond repute
Default Re: Copper vs Aluminum vs Ect.

You aren't to be looking at the conductivity of alumina, but rather the emissivity, or radiative properties of it, esp. in its most common form/application to aluminum.
BShanahan14rulz is offline   Reply With Quote
Old 07-27-2012, 08:24 PM #41
Class 1M Laser
 
Join Date: Oct 2011
Posts: 162
Rep Power: 8
flare09 has a spectacular aura aboutflare09 has a spectacular aura aboutflare09 has a spectacular aura about
flare09 flare09 is offline
Class 1M Laser
 
Join Date: Oct 2011
Posts: 162
Rep Power: 8
flare09 has a spectacular aura aboutflare09 has a spectacular aura aboutflare09 has a spectacular aura about
Default Re: Copper vs Aluminum vs Ect.

Haha trying to find 5 sides in a square brings two things to mind, 4th dimensions, or a similarity in trying to understand women.

Well a bimetal imho would leave room for error. Press fitting the two together aesthetically it would be awesome. But there's also the fact, with aluminum and copper, expansion properties are different. Aluminum is much more. So one might crack or expand out or place.

Now, as has been stated, the diodes ideally aren't heating enough to cause these problems, but Imo a copper base in some aluminum fins would be kinda badass.


So collectively, everyone thinks I should drop the homemade radiator and an attempted condensing and expanding unit, and just put tue waterblock and TEC? I put alot of time into that little thing :/ bending tubes, making the fins, experimenting with alumaweld...
flare09 is offline   Reply With Quote
Old 07-27-2012, 08:50 PM #42
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,144
Rep Power: 9321
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is online now
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,144
Rep Power: 9321
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Re: Copper vs Aluminum vs Ect.

If you're cooling a laser diode, you don't even need a water block. A CPU cooler is plenty.

Quote:
Originally Posted by TheDukeAnumber1 View Post
Aluminum forms an oxide on the surface with pretty bad thermal properties ... compared to Aluminum
So you judge thermal conductivity of all materials in comparison with aluminum? That would mean virtually everything except precious metals and diamonds have bad thermal conductivity. The material sciences world disagrees with you.
__________________
A problem well stated is a problem half solved.
Cyparagon is online now   Reply With Quote
Old 07-28-2012, 04:36 AM #43
TheDukeAnumber1's Avatar
Class 3R Laser
 
Join Date: Jun 2012
Location: Illinois
Posts: 2,045
Rep Power: 2270
TheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond repute
TheDukeAnumber1 TheDukeAnumber1 is offline
Class 3R Laser
TheDukeAnumber1's Avatar
 
Join Date: Jun 2012
Location: Illinois
Posts: 2,045
Rep Power: 2270
TheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond repute
Default Re: Copper vs Aluminum vs Ect.

Quote:
Originally Posted by Cyparagon View Post
So you judge thermal conductivity of all materials in comparison with aluminum? That would mean virtually everything except precious metals and diamonds have bad thermal conductivity. The material sciences world disagrees with you.
Well, everything is relative to your application. When using an aluminum heat sink, where aluminum oxide forms on the surface, the oxidized the surface layer's thermal conductivity drops to about 13% of what it used to be as aluminum, which is crappy, but negligible in this case. Why no one is trying to make a sink out of aluminum oxide. Compare thermal grease/epoxy to actual metals and it sucks, compare to non thermal grease/epoxy and it's great.

It should be obvious at this point that's we're talking about laser heat sinking materials, and not judging all materials against aluminum.

@flare09

Hey if you want to go above and beyond and make something cool and functional even if it only ends up being a concept project then go for it.
__________________
“Absence of evidence isn't evidence of absence."
http://laserpointerforums.com/donations.htm
[SIZE="1"]“It is impossible that any ill should happen to the man who is beloved of the Lord; the most crushing calamities can only shorten his journey and hasten him to his reward. Ill to him is no ill, but only good in a mysterious form. Losses enrich him, sickness is his medicine, reproach is his honour, death is his gain. No evil in the strict sense of the word can happen to him, for everything is overruled for good. Happy is he who is in such a case. He is secure where others are in peril, he lives where others die.”—Spurgeon

Last edited by TheDukeAnumber1; 07-28-2012 at 04:41 AM.
TheDukeAnumber1 is offline   Reply With Quote
Old 07-28-2012, 04:58 AM #44
Class 1M Laser
 
Join Date: Oct 2011
Posts: 162
Rep Power: 8
flare09 has a spectacular aura aboutflare09 has a spectacular aura aboutflare09 has a spectacular aura about
flare09 flare09 is offline
Class 1M Laser
 
Join Date: Oct 2011
Posts: 162
Rep Power: 8
flare09 has a spectacular aura aboutflare09 has a spectacular aura aboutflare09 has a spectacular aura about
Default Re: Copper vs Aluminum vs Ect.

Quote: @flare09

Hey if you want to go above and beyond and make something cool and functional even if it only ends up being a concept project then go for it.

Thanks. Lol im going to the shop tomorrow. I probably have a few more visits before the host is done. But ill make a thread when it is
flare09 is offline   Reply With Quote
Old 07-28-2012, 05:55 AM #45
Class 3R Laser
 
Join Date: May 2011
Posts: 2,454
Rep Power: 42929
Encap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond repute
Encap Encap is offline
Class 3R Laser
 
Join Date: May 2011
Posts: 2,454
Rep Power: 42929
Encap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond repute
Default Re: Copper vs Aluminum vs Ect.

Maybe gold plate the copper to resist corrosion--no nickel layer in between just gold on copper. Do not worry about diffusion of copper into the gold---at room temperatures that will take longer than the finished products lifetime.

Last edited by Encap; 07-29-2012 at 06:35 PM.
Encap is offline   Reply With Quote
Old 07-29-2012, 10:17 AM #46
Blutquell's Avatar
Class 1M Laser
 
Join Date: Aug 2011
Posts: 103
Rep Power: 8
Blutquell has a spectacular aura aboutBlutquell has a spectacular aura aboutBlutquell has a spectacular aura about
Blutquell Blutquell is offline
Class 1M Laser
Blutquell's Avatar
 
Join Date: Aug 2011
Posts: 103
Rep Power: 8
Blutquell has a spectacular aura aboutBlutquell has a spectacular aura aboutBlutquell has a spectacular aura about
Default Re: Copper vs Aluminum vs Ect.

lol xD
Blutquell is offline   Reply With Quote
Old 07-29-2012, 05:26 PM #47
grainde's Avatar
Class 3B Laser
 
Join Date: Jan 2012
Location: Alsace
Posts: 2,697
Rep Power: 31615
grainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond repute
grainde grainde is online now
Class 3B Laser
grainde's Avatar
 
Join Date: Jan 2012
Location: Alsace
Posts: 2,697
Rep Power: 31615
grainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond repute
Default Re: Copper vs Aluminum vs Ect.

Hey just to thow something else into the mix...A few have mentioned that Ag is better than Cu and Al. Whilst this is true in terms of the thermal conductivity, it isnt in terms of its specific heat capacity (S). Silver actually has a lower S than either Al or Cu, so even though it has a much higher density than Al, and a slightly higher density than Cu, this isnt enough to off set its lower S. For the same amount of energy input (with a fixed volume heatsink) Ag actually runs slightly warmer than Al, but only around 1%! This means that Cu would still out perform an Ag module in keeping the temperature of the diode lower.
__________________
New to lasers & want some info on how to build a laser? Look here: Build a laser

Need info on goggles? Look here: Get safety goggles now!

FS Custom Sinner Host builds available now!


Here is my old Kryton Groove FS thread!

100mW 405 PHR
700mW 405

2W 445 C6--link--
+2.3W 445 --link--
+2.5W 445 --link--

190mW 450 --link--
15mW 510nm
5mW 532 --link--
25mW 532 --link--

520mW 638 --link--
1W 638

250mW 650
250mW 780

3000 Lm C8 MTG2 @ 6 A!
Poppas mod 3A --link--
Sipik 98 Cu pill/star mod --link--
grainde is online now   Reply With Quote
Old 07-29-2012, 07:54 PM #48
TheDukeAnumber1's Avatar
Class 3R Laser
 
Join Date: Jun 2012
Location: Illinois
Posts: 2,045
Rep Power: 2270
TheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond repute
TheDukeAnumber1 TheDukeAnumber1 is offline
Class 3R Laser
TheDukeAnumber1's Avatar
 
Join Date: Jun 2012
Location: Illinois
Posts: 2,045
Rep Power: 2270
TheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond repute
Default Re: Copper vs Aluminum vs Ect.

__________________
“Absence of evidence isn't evidence of absence."
http://laserpointerforums.com/donations.htm
[SIZE="1"]“It is impossible that any ill should happen to the man who is beloved of the Lord; the most crushing calamities can only shorten his journey and hasten him to his reward. Ill to him is no ill, but only good in a mysterious form. Losses enrich him, sickness is his medicine, reproach is his honour, death is his gain. No evil in the strict sense of the word can happen to him, for everything is overruled for good. Happy is he who is in such a case. He is secure where others are in peril, he lives where others die.”—Spurgeon
TheDukeAnumber1 is offline   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes






Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 10:38 PM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC