Old 09-21-2016, 05:07 PM #1
Junior Member
 
Join Date: Sep 2016
Location: France
Posts: 12
Rep Power: 0
Sceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond repute
Sceeker Sceeker is offline
Junior Member
 
Join Date: Sep 2016
Location: France
Posts: 12
Rep Power: 0
Sceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond repute
Question What kind of heatsink is best ?

Hello !
I have a 250mW 532nm laser and I start needing an heatsink to use it for more than 2-5minutes (laser engraving machine).
I found two type of heatsinks for 12mm laser on eBay and I wanted to know which one you think is the best.
Here is the first one and here is the second one.
I think the firs tone is the best but I wanted to get your advice.
Thanks !


Sceeker is offline   Reply With Quote








Old 09-21-2016, 10:03 PM #2
HydroSean's Avatar
Class 2M Laser
 
Join Date: Mar 2016
Location: Indiana
Posts: 519
Rep Power: 1603
HydroSean has a reputation beyond reputeHydroSean has a reputation beyond reputeHydroSean has a reputation beyond reputeHydroSean has a reputation beyond reputeHydroSean has a reputation beyond reputeHydroSean has a reputation beyond reputeHydroSean has a reputation beyond reputeHydroSean has a reputation beyond reputeHydroSean has a reputation beyond reputeHydroSean has a reputation beyond reputeHydroSean has a reputation beyond repute
HydroSean HydroSean is online now
Class 2M Laser
HydroSean's Avatar
 
Join Date: Mar 2016
Location: Indiana
Posts: 519
Rep Power: 1603
HydroSean has a reputation beyond reputeHydroSean has a reputation beyond reputeHydroSean has a reputation beyond reputeHydroSean has a reputation beyond reputeHydroSean has a reputation beyond reputeHydroSean has a reputation beyond reputeHydroSean has a reputation beyond reputeHydroSean has a reputation beyond reputeHydroSean has a reputation beyond reputeHydroSean has a reputation beyond reputeHydroSean has a reputation beyond repute
Default Re: What kind of heatsink is best ?

The one with fins will dissipate the heat much faster and keep it cool for longer. Refer to the graph on this article.
https://www.pa-international.com.au/...=12&Itemid=177
Quote:
we had a third test rig with the extruded aluminium heat sink with finns
shown in yellow



the fins give the heatsink more surface area in contact with the surroundings, therefore there is more exchange of energy and a faster cooling rate.

Last edited by HydroSean; 09-21-2016 at 10:04 PM.
HydroSean is online now   Reply With Quote
Old 09-22-2016, 10:06 AM #3
DTR's Avatar
DTR DTR is online now
Class 4 Laser
 
Join Date: Jun 2010
Location: St. Louis MO
Posts: 5,406
Rep Power: 2300
DTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond repute
DTR DTR is online now
Class 4 Laser
DTR's Avatar
 
Join Date: Jun 2010
Location: St. Louis MO
Posts: 5,406
Rep Power: 2300
DTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond repute
Default Re: What kind of heatsink is best ?

Those China ones tend to have really bad tolerances which can give poor thermal contact. I really like these. It is a clamp design.
Heat Sink for 12 mm Modules
DTR is online now   Reply With Quote
Old 09-22-2016, 12:03 PM #4
Blarg King's Avatar
Class 2M Laser
 
Join Date: Oct 2013
Location: NewBrunswick, Canada
Posts: 911
Rep Power: 755
Blarg King has a reputation beyond reputeBlarg King has a reputation beyond reputeBlarg King has a reputation beyond reputeBlarg King has a reputation beyond reputeBlarg King has a reputation beyond reputeBlarg King has a reputation beyond reputeBlarg King has a reputation beyond reputeBlarg King has a reputation beyond reputeBlarg King has a reputation beyond reputeBlarg King has a reputation beyond reputeBlarg King has a reputation beyond repute
Blarg King Blarg King is online now
Class 2M Laser
Blarg King's Avatar
 
Join Date: Oct 2013
Location: NewBrunswick, Canada
Posts: 911
Rep Power: 755
Blarg King has a reputation beyond reputeBlarg King has a reputation beyond reputeBlarg King has a reputation beyond reputeBlarg King has a reputation beyond reputeBlarg King has a reputation beyond reputeBlarg King has a reputation beyond reputeBlarg King has a reputation beyond reputeBlarg King has a reputation beyond reputeBlarg King has a reputation beyond reputeBlarg King has a reputation beyond reputeBlarg King has a reputation beyond repute
Default Re: What kind of heatsink is best ?

The one with the fins will cool better. If you really want it to run a decent amount of time I would suggest adding a fan blowing on the heatsink.
__________________
405- 45 mW ebay pen
405- 90 mW ebay laser Deceased (Caught fire???)
445- 1.7 Watt Blord 501B
473- 10 mW B&W Tek Labby

520- 150 mW LaserBTB HL520
532- 40 mW ebay pen
532- 80 mW WickedLasers Fusion
532- 220 mW SkyLasers
638- 180 mW 501B

638- 5 mW LaserGlow Libra
633- 1 mW Uniphase Novette HeNe
638- 1 mW (?) HeNe Tube
650- 5 mW ebay pen
980- 60 mW ebay pen
Blarg King is online now   Reply With Quote
Old 09-22-2016, 04:11 PM #5
Junior Member
 
Join Date: Sep 2016
Location: France
Posts: 12
Rep Power: 0
Sceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond repute
Sceeker Sceeker is offline
Junior Member
 
Join Date: Sep 2016
Location: France
Posts: 12
Rep Power: 0
Sceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond reputeSceeker has a reputation beyond repute
Default Re: What kind of heatsink is best ?

Quote:
Originally Posted by HydroSean View Post
the fins give the heatsink more surface area in contact with the surroundings, therefore there is more exchange of energy and a faster cooling rate.
Ok, thank you ! I will buy one with fins !


Quote:
Originally Posted by DTR View Post
Those China ones tend to have really bad tolerances which can give poor thermal contact. I really like these. It is a clamp design.
Heat Sink for 12 mm Modules
Thank you I will probably buy this one then.


Quote:
Originally Posted by Blarg King View Post
The one with the fins will cool better. If you really want it to run a decent amount of time I would suggest adding a fan blowing on the heatsink.
I think a heatsink will suffice but if it gets hot I will do it thanks !

Last edited by Sceeker; 09-22-2016 at 04:25 PM.
Sceeker is offline   Reply With Quote
Old 09-22-2016, 08:04 PM #6
paul1598419's Avatar
Class 3B Laser
 
Join Date: Sep 2013
Location: Washington State
Posts: 2,714
Rep Power: 4393
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: 2,714
Rep Power: 4393
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: What kind of heatsink is best ?

Thought I would mention that a 250mW DPSSL isn't going to engrave anything. It might not even be that high in power if you haven't measured it yourself, or had it measured before you got it.
__________________
405nm Laser Pointer 45mW
405nm C11 700mW
405nm Laser Shack Pointer 80mW
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
488nm Uniphase #2201-20SLAT argon laser head and power supply >40mW
532nm 200mW thermostatically 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 PSU New
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
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
Eisco Scientific Spectroscope 400nm- 700nm
paul1598419 is online now   Reply With Quote
Old 09-22-2016, 08:53 PM #7
RedCowboy's Avatar
Class 3B Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,180
Rep Power: 6526
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 3B Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,180
Rep Power: 6526
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: What kind of heatsink is best ?

For a non fan forced air application I would think the blades of grass type would be better than the solid runners, as always the taller the better within reason.

Also some have extra waves built into the fins to add to the total surface area, also I have heard the black coating helps somehow.

Attached Thumbnails
What kind of heatsink is best ?-sany0629.jpg  
__________________
You can not put freedom in a bag.
It is in fact an abstract concept.
Yet it is the single most valuable thing anyone has ever had.

Last edited by RedCowboy; 09-22-2016 at 08:53 PM.
RedCowboy is online now   Reply With Quote
Old 09-22-2016, 11:20 PM #8
10fenny's Avatar
Class 2M Laser
 
Join Date: Sep 2014
Location: PDX- Now KY sigh
Posts: 849
Rep Power: 1328
10fenny has a reputation beyond repute10fenny has a reputation beyond repute10fenny has a reputation beyond repute10fenny has a reputation beyond repute10fenny has a reputation beyond repute10fenny has a reputation beyond repute10fenny has a reputation beyond repute10fenny has a reputation beyond repute10fenny has a reputation beyond repute10fenny has a reputation beyond repute10fenny has a reputation beyond repute
10fenny 10fenny is online now
Class 2M Laser
10fenny's Avatar
 
Join Date: Sep 2014
Location: PDX- Now KY sigh
Posts: 849
Rep Power: 1328
10fenny has a reputation beyond repute10fenny has a reputation beyond repute10fenny has a reputation beyond repute10fenny has a reputation beyond repute10fenny has a reputation beyond repute10fenny has a reputation beyond repute10fenny has a reputation beyond repute10fenny has a reputation beyond repute10fenny has a reputation beyond repute10fenny has a reputation beyond repute10fenny has a reputation beyond repute
Default Re: What kind of heatsink is best ?

532 for engraving.... ? the search bar at the bottom will help with this.. ir diodes are a lot for efficient for this.. even a 445 would be better
__________________
Notable Lasers:
405nm Blue-ray16x Build 850mW
445nm M140 Build 2100mW
450nm Build 70mW
515nm Build 60mW
520nm Build 175mW
520nm Build 1.1W
589nm DL Spartan 78mW peak
638nm Oclaro Build 900mW
650nm Nintendo Build 280mWhttp://laserpointerforums.com/f50/fi...wer-92152.html
650nm 5mW Rubber Ducky Build http://laserpointerforums.com/f50/ru...ser-92717.html
685nm Build 15mW http://laserpointerforums.com/f50/pr...ink-94332.html
RGV Projector
1.8W RGB Projector
Pangolins Quickshow!!
APC 40 Midi Controller
APC Mini Midi Controller
1200Watt 1byOne Fog Machine- almost too strong!
Chauvet Obey 40 DMX Controller

Last edited by 10fenny; 09-22-2016 at 11:20 PM.
10fenny is online now   Reply With Quote
Old 09-22-2016, 11:32 PM #9
Benm's Avatar
Class 4 Laser
 
Join Date: Aug 2007
Location: Netherlands
Posts: 6,984
Rep Power: 2976
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: 6,984
Rep Power: 2976
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: What kind of heatsink is best ?

Probably, but from the topic start:

The first item isn't really a heatsink, it's a mounting device used to connect a round module to a flat surface like the back of a heatsink. By itself it will do very little since it has little surface area.

The second item has some fins but also tapped screwholes at the bottom so you can connect an extra heatsink there. One thing that puzzles me is why they made the rectangular cutout between module and bottom though, this would severly impede how effective an extra heatsink can be. It seems to be common for similar modules on ebay.

You'd think it saves material costs, but these things look to be machined out of solid stock material so it would only be extra work to cut that slot out. Anyone have any ideas on this?
Benm is online now   Reply With Quote
Old 09-23-2016, 01:38 AM #10
paul1598419's Avatar
Class 3B Laser
 
Join Date: Sep 2013
Location: Washington State
Posts: 2,714
Rep Power: 4393
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: 2,714
Rep Power: 4393
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: What kind of heatsink is best ?

It could be die cast. Once it has been polished and anodized, or coated, you wouldn't be able to tell.
__________________
405nm Laser Pointer 45mW
405nm C11 700mW
405nm Laser Shack Pointer 80mW
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
488nm Uniphase #2201-20SLAT argon laser head and power supply >40mW
532nm 200mW thermostatically 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 PSU New
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
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
Eisco Scientific Spectroscope 400nm- 700nm
paul1598419 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








Top 50 Laser Pointer Companies - Green Lasers Top 50 Laser Pointer Companies - Blue Lasers Top 50 Laser Pointer Companies - Red Lasers
Top 50 Laser Pointer Companies - Yellow Lasers Top 50 Laser Pointer Companies - Purple Lasers Top 50 Laser Pointer Companies - Orange Lasers
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 07:49 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