2 watt laser from scratch parts

[paul1598419]

Handheld hosts come with their own heat sinks. If you change diodes to a 3+ watt one you'll need a new driver setup to get that kind of power out of it. I usually only use 1.8 amps for M140 diodes as the higher power ones require more current. You could use one for the 1 watt 520nm green, but you'd be limiting the output.

 

[GSS]

The copper piece on SXD driver that Rich was mentioning is needed to heatsink that SXD driver if its set to 2.4A or more. Rich just showed it as a example.
That SXD can be set from 1.8A to 4.5A depending on the diode you want and DTR will send it set up already.
The host itself you choose will need a heatsink for that 12mm copper module that Rich pictured to slide in.
Technicaly the stronger the diode the bigger heat sink is needed but you can always go with a smaller run time.
A M140 diode should be set at 1.8A to get 2W+ so you wont need that copper piece on the SXD drivers chip.

 

[Jaxson Smit]

Alright so to recap I need for parts an m140 laser diode an SXD driver set at 1.8 a, a 12mm copper module, 2 lithium ion batteries and a host/housing for the laser(that already has heat sink)?

 

[paul1598419]

Alright so to recap I need for parts an m140 laser diode an SXD driver set at 1.8 a, a 12mm copper module, 2 lithium ion batteries and a host/housing for the laser(that already has heat sink)?

Yep. You will only need to use a set screw to hold the module against the heat sink in the host to get a good heat transfer.

 

[Lifetime17]

Hi,
These are the steps in order to put it together. The only pic omitted is the main sink with a drilled and tapped hole for a set screw as Paul said. You can use a 6-32 or a 4-40 size for the set screw to hold in the 12mm copper module once you press the diode into the 12m module with the special press tool.
I also make hosts with heat sinks prewired with set screws.
Rich

 

[Jaxson Smit]

Hi,
These are the steps in order to put it together. The only pic omitted is the main sink with a drilled and tapped hole for a set screw as Paul said. You can use a 6-32 or a 4-40 size for the set screw to hold in the 12mm copper module once you press the diode into the 12m module with the special press tool.
Rich

Thanks for the help!

 

[Jaxson Smit]

I'm going to send you a list of parts to confirm it

 

[Jaxson Smit]

I am having trouble finding a housing though butdo these look okay?

 

[paul1598419]

I would have gotten batteries that weren't Ultrafire branded. Some can be okay, but many more just aren't. And you never know in advance which you will get. I buy all my 18650s from liionwholesales.com. Every one I have gotten from them matched or exceeded the stated capacity.

 

[Jaxson Smit]

I would have gotten batteries that weren't Ultrafire branded. Some can be okay, but many more just aren't. And you never know in advance which you will get. I buy all my 18650s from liionwholesales.com. Every one I have gotten from them matched or exceeded the stated capacity.

So besides that are the other parts listed okay? I can't find a housing either

 

[Anthony P]

If you look at the Survival Laser International home page, under documents, there are step by step instructions for assembling a variety of Hosts and modules.

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[Lifetime17]

View attachment 67734
I am having trouble finding a housing though butdo these look okay? View attachment 67731View attachment 67732View attachment 67733

Hi,
So so good the 12mm copper module you need is a 5.6mm X 12mm for the M140 diode , SXD set to 1.8A , Now you need a host to house the 12mm module . You will need one that holds 2X18650 prewired .
Rich

 

[Jaxson Smit]

Hi,
So so good the 12mm copper module you need is a 5.6mm X 12mm for the M140 diode , SXD set to 1.8A , Now you need a host to house the 12mm module . You will need one that holds 2X18650 prewired .
Rich

Thanks I was also wondering why this build seems so expensive? Some of these lasers are available for $50 but mine looks like it'll be $80 even though they're the same power

 

[Shotgundrums]

$80 is nothing, fella.
check out Trinh hong phuoc’s page.
He makes handheld lasers for the prices you may be steering toward.
Good luck.
SGD

 

[paul1598419]

I've spent many times $80.00 on single laser or one of my builds. That is chump change for some of my lasers. I know for a fact others have spent 10 X that amount for a single laser. I think my most expensive one was ~$450.00. I spent much more for my spectrometer to measure wavelengths of lasers than I did for any one laser.

 

[Jaxson Smit]

I've spent many times $80.00 on single laser or one of my builds. That is chump change for some of my lasers. I know for a fact others have spent 10 X that amount for a single laser. I think my most expensive one was ~$450.00. I spent much more for my spectrometer to measure wavelengths of lasers than I did for any one laser.

Do you know how some companies are selling two watt lasers for like $50?