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 > General



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



Reply
 
LinkBack Thread Tools Display Modes
Old 07-15-2016, 10:40 PM #17
Cel's Avatar
Cel Cel is online now
Class 2M Laser
 
Join Date: Jan 2012
Location: Croatia
Posts: 738
Rep Power: 1379
Cel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond repute
Cel Cel is online now
Class 2M Laser
Cel's Avatar
 
Join Date: Jan 2012
Location: Croatia
Posts: 738
Rep Power: 1379
Cel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond repute
Default Re: Aluminum heatsinks are better than copper heatsinks, when cheaper

Yeah, but sometimes the best stuff is not the optimal choice. So for now stick with copper or aluminium. Unless for experimenting.
Hey, at least they are easy to machine and relatively inexpensive.

Good enough is fine, no need for exotic stuff. And we also have TECs and fans.


__________________
450nm NDB7875 @ 2A in PL-E
Cel is online now   Reply With Quote







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







Old 07-15-2016, 11:38 PM #18
ArcticDude's Avatar
Class 2 Laser
 
Join Date: Jun 2016
Location: Fennoscandia
Posts: 481
Rep Power: 18650
ArcticDude has a reputation beyond reputeArcticDude has a reputation beyond reputeArcticDude has a reputation beyond reputeArcticDude has a reputation beyond reputeArcticDude has a reputation beyond reputeArcticDude has a reputation beyond reputeArcticDude has a reputation beyond reputeArcticDude has a reputation beyond reputeArcticDude has a reputation beyond reputeArcticDude has a reputation beyond reputeArcticDude has a reputation beyond repute
ArcticDude ArcticDude is online now
Class 2 Laser
ArcticDude's Avatar
 
Join Date: Jun 2016
Location: Fennoscandia
Posts: 481
Rep Power: 18650
ArcticDude has a reputation beyond reputeArcticDude has a reputation beyond reputeArcticDude has a reputation beyond reputeArcticDude has a reputation beyond reputeArcticDude has a reputation beyond reputeArcticDude has a reputation beyond reputeArcticDude has a reputation beyond reputeArcticDude has a reputation beyond reputeArcticDude has a reputation beyond reputeArcticDude has a reputation beyond reputeArcticDude has a reputation beyond repute
Default Re: Aluminum heatsinks are better than copper heatsinks, when cheaper

Quote:
Originally Posted by Cel View Post
Considering graphene is a single sheet of carbon atoms, I'd say it is not really a feasible option.
I just made a clumsy joke

I know that Graphene is not a option. Copper is good choice but it's a bit heavy in bigger heatsink designs..

Last edited by ArcticDude; 07-15-2016 at 11:38 PM.
ArcticDude is online now   Reply With Quote
Old 07-16-2016, 12:08 AM #19
Benm's Avatar
Class 4 Laser
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,348
Rep Power: 10514
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Benm Benm is online now
Class 4 Laser
Benm's Avatar
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,348
Rep Power: 10514
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Default Re: Aluminum heatsinks are better than copper heatsinks, when cheaper

In theory diamond would also be a very good option if cost was no concern, though getting it in the right shape is difficult. It is also an electrical isolator, materials like beryllium oxide are normally used when that is required.

As for the more realistic options of copper and aluminium: when making heatsinks the rule of thumb in electronical engineering is that aluminium is better per kilogram and copper is better per cubic metre.

If you must have a heatsink below a given volume copper outperforms aluminium slightly, if you need it below a given weight aluminium far outperforms copper.

When considering cost (W/K per dollar) aluminium wins by a large margin, but if the area to cool is very small (like a gpu die) it makes sense to use a slab of copper or even a heatpipe fitted to a big aluminium heatsink.
Benm is online now   Reply With Quote
Old 07-16-2016, 12:13 AM #20
paul1598419's Avatar
Class 3B Laser
 
Join Date: Sep 2013
Location: Washington State
Posts: 4,702
Rep Power: 31235
paul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond repute
paul1598419 paul1598419 is online now
Class 3B Laser
paul1598419's Avatar
 
Join Date: Sep 2013
Location: Washington State
Posts: 4,702
Rep Power: 31235
paul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond repute
Default Re: Aluminum heatsinks are better than copper heatsinks, when cheaper

Keep in mind that a change in temperature of 1.4 C is not equal to a change of 1.4 F. It is actually 2.52 F. This is related to the quote in post # 3 of this thread.
__________________
405nm Laser Pointer 45mW
405nm C11 700mW
405nm Laser Shack Pointer 80mW
Thor H Dual Power 445nm, 438 mW & 1648 mW
445nm 1.75 watts SkyRay Gifted
445nm 3 watts MS-SSW-II
445nm 2.2 watts Nichia MS Envy

445nm 2 watt SMP Copper Host
477nm 127 mW 501B
488nm Uniphase #2201-20SLAT argon laser head and power supply >40mW
520nm LaserLands pointer
532nm LSR532H-1W Laser, LSR-PS-N1 Driver, RS-75-5 P.S. 1300 mW
532nm 200mW Thermostatically Controlled Fan Cooled (Besram) >230mW
532nm 189mW pocket lab laser
532nm lasers X6 100mW-200mW
532nm lasers X4 75mW- 140mW
632.8nm P210 New Laser Tube 0.57mW Melles Griot 05-LMP-827-037 PS
632.8nm Spectra- Physics He- Ne #102-2 4mW heads X2 and #236 power supply
632.8nm PMS He-Ne # 201P/ LPS-115 2mW
632.8nm Siemens HeNe LGK7630S 7.6mW
635nm 1 watt Cyprus II
635nm 1 watt SMP Copper host
635nm 5mW pointer
635nm 100mW pointer
635nm Lifetime17 Mini-camo build 687mW
650nm 65mW pointer
650nm 380mW 501B
808nm 1+W infrared laser
infrared video camera for collimating IR lasers
Ocean Optics USB2000 Spectrometer
Scientech Vector S310 with AC2500 10 Watt LPM
LaserBee II 3.2 Watt LPM
Radiant X4 3.7 Watt LPM

Last edited by paul1598419; 07-16-2016 at 12:15 AM.
paul1598419 is online now   Reply With Quote
Old 07-16-2016, 03:08 AM #21
Philipd7's Avatar
Class 1 Laser
 
Join Date: Jun 2015
Location: Hilliard, Ohio
Posts: 89
Rep Power: 270
Philipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond repute
Philipd7 Philipd7 is offline
Class 1 Laser
Philipd7's Avatar
 
Join Date: Jun 2015
Location: Hilliard, Ohio
Posts: 89
Rep Power: 270
Philipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond repute
Default Re: Aluminum heatsinks are better than copper heatsinks, when cheaper

Quote:
Originally Posted by paul1598419 View Post
Keep in mind that a change in temperature of 1.4 C is not equal to a change of 1.4 F. It is actually 2.52 F. This is related to the quote in post # 3 of this thread.
I was thinking that wasn't right also
__________________
1.5W 445nm C6
4x 532nm ebay crap ?mw
300mw 650nm LPC-826DEAD
6.5W 445nm NUBM44 Maglite
NDB7675 Ultrafire XM-L2 462nm
Philipd7 is offline   Reply With Quote
Old 07-16-2016, 03:11 AM #22
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,119
Rep Power: 7620
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 offline
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,119
Rep Power: 7620
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: Aluminum heatsinks are better than copper heatsinks, when cheaper

The power involved here is so low, it really doesn't matter.

It's like saying "what's better wire size for 1 amp of current, 9awg, or 6 awg?" Yes, someone that just read the wikipedia page might think themselves an expert for knowing "6awg has twice the conductivity as 9awg," but either are more than enough for 1 amp.

Copper might be necessary to remove the 300W of heat generated by a GPU die, but for a small hunk with no fins and a 10W load, it's just not going to make much of a difference what material you choose. Don't just assume the conductivity of the material is the only factor, or even the biggest factor. That's categorically stupid.
__________________
A problem well stated is a problem half solved.
Cyparagon is offline   Reply With Quote
Old 07-16-2016, 04:56 AM #23
Sta's Avatar
Sta Sta is online now
Class 3R Laser
 
Join Date: Jan 2014
Location: New Jersey, USA
Posts: 1,639
Rep Power: 6234
Sta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond repute
Sta Sta is online now
Class 3R Laser
Sta's Avatar
 
Join Date: Jan 2014
Location: New Jersey, USA
Posts: 1,639
Rep Power: 6234
Sta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond repute
Default Re: Aluminum heatsinks are better than copper heatsinks, when cheaper

Quote:
Originally Posted by FinalDeclaration View Post
Read the wikipedia page Is that what you use to sound smart? What a joke.
Your attitude does not belong on this forum. Please be civil or be gone.
__________________

403nm BTB LP405-5
405nm "5mW" eBay pen, 50mW 'bottle' pointer, 450mW lmlaser
445nm 7W NUBM44 lightsaber build
450nm 2W SF501B, 10mW pointer, 50mW lmlaser
453nm 100mW LaserBTB HL
455nm 1.6W Arcane
457.9nm Argon line
470nm NUBM07E S4X build
473nm 100mW PL-E Pro, LG Aquarius-2
476.5nm Argon line
488nm Argon line
496.5nm Argon line
501.7nm Argon line
513nm 50mW Thor
514.5nm Argon line
515nm 200mW 501B
522nm 1.4W S4X build
527nm
532nm 500mW XPL-H, 2x gearbest, 9-line 301, 35mW lmlaser, LG Anser-5
537nm
542nm
543.5nm Gammex HeNe
547nm
561nm 50mW PGL-III-C
583.8nm Spartan primary cold line
586.2nm
589nm 120mW PGL-III-C, DL Spartan (7+ lines) 177mW pk!
591nm
593.5nm Rigel-6, LaserCentury Y3PL-T8 20mW
594.1nm LHOR-0150M HeNe
604nm LHOR-0150M HeNe
609nm LHOR-0150M HeNe
612nm LHOR-0150M HeNe
632.8nm 10mW JDSU HeNe, 10mW Lasos HeNe
635nm 90mW DL Spartan, LG Libra
638nm 600mW XPL-310
655nm BTB LP650-5
660nm 200mW (3x), "5mW" eBay pen
690nm 15mW module





YouTube - Starmute VII!
Sta is online now   Reply With Quote
Old 07-16-2016, 08:29 AM #24
GSS GSS is online now
Class 3R Laser
 
Join Date: Apr 2015
Location: Fall river MA
Posts: 2,266
Rep Power: 28069
GSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond repute
GSS GSS is online now
Class 3R Laser
 
Join Date: Apr 2015
Location: Fall river MA
Posts: 2,266
Rep Power: 28069
GSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond repute
Default Re: Aluminum heatsinks are better than copper heatsinks, when cheaper

Quote:
Originally Posted by Philipd7 View Post
Quick quesion:
Is the point of the extended taper to not only give it more mass, but also to transfer heat to the air faster? (like the point of fins)
Maby a bit of both, but probably more for looks and I think Survival Lasers also offers that cone shaped focus knob that looks good with that tapered sink.
GSS is online now   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 04:38 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