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Old 11-19-2014, 08:42 PM #1
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Default Laser Heatsinks

Hello All,

I am upgrading one of the 3D printers we run at my printshop with a laser engraver. We have a bunch of diodes we're testing (A140, M140, NDB7875) and would like to know what heatsinks will give us extended runtimes in the order of 30mins - 1 hour.

We're hoping to run the A140's at around 1A/1W and the NDB7875 at around 1.8A.2.5W. The lasers are in the copper aixiz modules currently and we already have a few of these: 12mm Holder Clamp Mount Heatsink Cooling Laser Module Pointer Lens Mirror | eBay

Or something very similar.

Seeing as the laser will be used for cutting and engraving it will be run duty-cycled, whereby it will be on for cutting moves and off for movements.

Any advice would be appreciated, I have no experience with diode lasers in order to guess at how hot they get, and what heatsinking is necessary.

Thanks!


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Old 11-19-2014, 10:02 PM #2
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Default Re: Laser Heatsinks

Use a big heat sink if you are going to run it for that long. And a fan. Possibly more.
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Old 11-19-2014, 10:05 PM #3
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Default Re: Laser Heatsinks

Thanks for the reply!

I'm looking for specifics though, do you have experience running either of these diodes over long periods ?

How "big" do you mean, did you take a look at my eBay link ?

I have considered a fan, and will add one if thats what the consensus is.
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Old 11-22-2014, 08:23 PM #4
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Default Re: Laser Heatsinks

You posted a duplicate topic in general. I responded with some good advice based on hands on experience with long run times and heat sink types.

Heatsinks and Runtime
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