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Old 12-02-2010, 04:35 PM #1
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Default Building a heatsink using a lathe

I need to build a heatsink for aixiz modules and i found a man in my city that works with lathes, do you have any project so i can bring to him?

If noone has a project, how must a heatsink be attached to the module? Screwed or only embedded to it outside?

Thanks =D


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Old 12-02-2010, 05:18 PM #2
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Default Re: Building a heatsink using a lathe

If it were me I would have him redesign the axis module its self for a project lol.

The heatsinks usually use a set-screw to hold it in place, but it should be a relatively good fit to begin with or your not going to be transfering enough heat.
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Old 12-03-2010, 04:03 PM #3
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Default Re: Building a heatsink using a lathe

the aixiz module can be a press fit or held with a set screw. basically you bring him the module and let him play with it.

or you can bring him a hose and let him make a heat sink for it and let the diode get press fit directly into the heat sink.


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Old 12-03-2010, 04:21 PM #4
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Default Re: Building a heatsink using a lathe

Keep in mind AixiZ modules vary in size. I'd go for a screw if you are going to make more than one heat sink.
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Old 12-03-2010, 04:34 PM #5
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Default Re: Building a heatsink using a lathe

^^^^^ very true. shows how bad my memory is... i had this very thing happen to me. luckily i had my dremmel close by.


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Old 12-03-2010, 10:54 PM #6
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Default Re: Building a heatsink using a lathe

Well, we built one today, it is like a cover to the aixiz module with 14mm of diameter (i'm using a 12mm aixiz module). I'll test it and see how does it works, the next time i'll do something bigger to sink more heat. Thanks for all suggestions, i tried to use them all and my choise was a not screwed heatsink but only embedded between the lenses and the diode case, i hope the focus is still ajustable, going to try tomorrow since i have a TERRIBLE headache!
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Old 12-04-2010, 12:37 AM #7
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Default Re: Building a heatsink using a lathe

Ummm pix please.
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Old 12-04-2010, 01:27 AM #8
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Default Re: Building a heatsink using a lathe

project 1
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Old 12-04-2010, 01:30 AM #9
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Default Re: Building a heatsink using a lathe

project 2, me and many others will pay for.
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Old 12-04-2010, 09:49 PM #10
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Default Re: Building a heatsink using a lathe

I personally prefer clamshell style coupling to the module since pressure is more even on either side of the heat sink. of course, that's more machining so its not for everyone.
Class IIIb Green Laser Modules - FDA Safety Class IIIb, 5.0 ~ 500 mW, OEM Products - Reseach the HS-1a heat sinks listed there (can't be used in a pointer build unless you want a huge honking thing unfortuantely) use that style of coupling. The tightening screws are out of view but the module slides in quite easily, then you just tighten the clamping screws and it clamps down on the module. I have one for a lab build I will get around to doing.

For pointers, basically you just just drill two holes not down the centre but will still fall within the heat sink, tap the holes appropriately, then you shape the heat sink, then you make one cut down the centre only to where the module goes but don't cut it clean in half (this is so you can tighten the screws to clamp down around the module. then done. More work than just drilling a hole and then putting in a set screw, but its a little more elegant in my view
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Old 12-05-2010, 04:04 PM #11
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Default Re: Building a heatsink using a lathe

Well i couldn't take pictures because my phone is dead, anyways, i projected two heatsinks on autocad and i think you can tell me what's the best...

The second is screwed and the first must be attached with some termal glue...
http://img208.imageshack.us/i/dissipador1.png/
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Old 12-05-2010, 04:17 PM #12
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Default Re: Building a heatsink using a lathe

Hmmm, not bad. However, my first impression is that the OD is a little small for serious high power applications. Fine for an LOC diode or perhaps upto a 6x BluRay but the 445nms and 12x BRs may struggle to stay cool. It will also be very difficult to produce them solely on a lathe!

Nice to see the renders though! Is that AutoCad or another from that stable? I recognise the global axes! [EDIT: Just read your post again and it is AutoCAD. I really should read all before posting... My apologies.]

Keep plugging away though, it's not wasted time at all...

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Old 12-05-2010, 04:30 PM #13
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Default Re: Building a heatsink using a lathe

Well, i'm thinking about using this heatsink with coolers on a 1,2W 455nm module, do you think it's good enough?

*Used autocad 2007 with realistic render =) looks like solidworks, but it's autocad.
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Old 12-06-2010, 11:37 AM #14
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Default Re: Building a heatsink using a lathe

With coolers? In what way exactly? It could be okay but it depends what host you're intending to use, what coolers, etc. Even with cooling, there are some possible obstacles. TEC cooling will produce it's own heat that you'll need to deal with and fans will also need a seperate power supply. Even with all these, you will likely still have a duty cycle if it's a common sized flashlight host. Experimenting will show whether it works I guess and the 445s are pretty hardy when it comes to heat.

Difficult to advise at this stage, I'm afraid.

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Old 12-06-2010, 02:14 PM #15
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Default Re: Building a heatsink using a lathe

Well, this one i'm building to sell to my cousin, he rents laser show equipments... i'll set it for 400mA with LM317 (will i need heatsink for LM317?)

The equipment has coolers inside...
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