FS: Host + Heatsink $15

[Mohrenberg]

I've gotta get to work on these heatsink. I'm gonna bring my laptop to the basement so i can check in periodically on people's choice of color...

 

[Coherent Light]

Heck I think I'll take a Silver one, so that frees up one of the blacks for others.

Let's Get Ready to Rumble!!!

 

[rangedunits]

Optical beam dumps

huh?
I haven't even lit one of these things up. They are 14 of those crap LED's in them.....i always send those damn LED's to the trash lol

whats beam dump?

An optical beam dump is an optical element used to absorb a beam of light. Major design concerns in a beam dump typically include the management and reduction of back reflections and scattering as well as the dissipation of heat generated by absorption. For low-power systems and less demanding applications, the device can be as simple as a piece of black velvet or flock paper glued onto a stiff backing, but higher-power beam dumps must often incorporate more elaborate features to avoid back-reflection, overheating, or excessive noise. Dumping the beam with a simple flat surface may scatter unacceptably large amounts of light for some applications, even though the direct reflection may be effectively reduced. To minimize scattering, it is common to use deep, dark cavities lined with an absorbing material to dump the beam. A particularly simple and relatively inexpensive approach is to use a stack of razor blades with the sharp edges facing the beam, so that the spaces between the blades form very deep cavities from which little light escapes.
A commonly available type of beam dump suitable for most medium-power lasers is a cone of aluminum with greater diameter than the beam, anodized to a black color and enclosed in a canister with a black, ribbed interior. Only the point of the cone is exposed to the beam head-on; mostly, incoming light grazes the cone at an angle, which eases performance requirements. Any reflections from this black surface are then absorbed by the canister. The ribs both help to make light less likely to escape, and improve heat transfer to the surrounding air.
Extremely high-power beam dumps have been made using water with controlled amounts of colored salts (e.g., copper (II) sulfate) to give a moderate absorbance of the beam. The water is circulated through a long pipe with a window at one end, and chilled using a heat exchanger.

 

[Digger]

thanks!

 

[hugo999999]

@rangedunits lol? wrong thread or something? :thinking:

 

[Mohrenberg]

K i'll put you down for silver.
I've got 9 heat sinks that are done except for the set screw...so far

 

[Mohrenberg]

Optical beam dumps

An optical beam dump is an optical element used to absorb a beam of light. Major design concerns in a beam dump typically include the management and reduction of back reflections and scattering as well as the dissipation of heat generated by absorption. For low-power systems and less demanding applications, the device can be as simple as a piece of black velvet or flock paper glued onto a stiff backing, but higher-power beam dumps must often incorporate more elaborate features to avoid back-reflection, overheating, or excessive noise. Dumping the beam with a simple flat surface may scatter unacceptably large amounts of light for some applications, even though the direct reflection may be effectively reduced. To minimize scattering, it is common to use deep, dark cavities lined with an absorbing material to dump the beam. A particularly simple and relatively inexpensive approach is to use a stack of razor blades with the sharp edges facing the beam, so that the spaces between the blades form very deep cavities from which little light escapes.
A commonly available type of beam dump suitable for most medium-power lasers is a cone of aluminum with greater diameter than the beam, anodized to a black color and enclosed in a canister with a black, ribbed interior. Only the point of the cone is exposed to the beam head-on; mostly, incoming light grazes the cone at an angle, which eases performance requirements. Any reflections from this black surface are then absorbed by the canister. The ribs both help to make light less likely to escape, and improve heat transfer to the surrounding air.
Extremely high-power beam dumps have been made using water with controlled amounts of colored salts (e.g., copper (II) sulfate) to give a moderate absorbance of the beam. The water is circulated through a long pipe with a window at one end, and chilled using a heat exchanger.

oh you mean your beam terminator?
I thought about it but am still looking for a coating that won't burn from the beam. I don't have a 445 so it limits my ability to test different paints or coatings.

 

[Elektrotechniker]

Mohrenberg, i'll take a silver host, thanks. will see if I can send payment today, if not, tomorrow.

 

[leukoplast]

Just shot you a PM Mr.Berg

I'll take a silver one! They actually look very slick. Black is so played out anyway, would be nice to have something different.

 

[DTR]

Looking good. Keep up the good work.:beer:

 

[Mohrenberg]

I've got all the heatsinks cut out....i'm going to have hulk arms soon from using this hack saw.....
I'm going to see if i can get things finished up tonight. I've got to go buy some set screws in the morning and things should be ready to ship out.

 

[Mohrenberg]

Update on the hosts. I will be turning down the plastic spacer that sits under the module. When this is done it allows the entire aixiz module plus 1/4" room for a spring or some kind of contact.

Also, This host WILL fit an 18650, or 2xCR123 batteries.
The tail cap has spacers inside of it. I removed the plastic spacer to find two metal disks, once removed it easily allows for the above configuration.

I got all the heat sinks cut, and the hole for the modules drilled. I've got 11 that just need set screws, the rest need set screws and to be turned down to size.

I'm going to start finishing them 1 by 1 to the finish and shipping them off so I can start getting some kits to the their respective owners.

I will be cutting down the switch spacer to allow the aixiz module, and then modding the tailcap to allow the 18650/2xcr123, but i will also include the two metal spacers with everyone's package in case they wish to use the 3xAAA pill.

 

[Coherent Light]

Sounds Good Matt as I am gonna use an 18650.

 

[Mohrenberg]

Also, my last batch of hosts have been shipped to me.
I'm not going to post them for sale or accept any payments until they are done this time.
That way i can take my time on them.

 

[Coherent Light]

Give Your self a chance to breathe this time. You should have known that you would be slammed as soon as You said $15.00 for the Host, H/S, and shipping.

 

[cd520]

I forgot to mention that I was able to fit a protected 18650 in the host, albeit very tightly, with no mods.