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ArcticMyst Security by Avery

Cypreus II 1W Violet Diode Review

Joined
Aug 25, 2010
Messages
533
Points
63
Hi to all.
This is my first complete and almost well done review for a laser build, so be nice please :p
Starring two awesome items:

- The DTR 16X BDR-209 Diode In Copper Module With Driver @ 700 mA and 405-G-2 Glass Lens;
- The Sinner's Cypreus II copper host.

For this build I have used three new special guests:

- A new digital WELLER WSD81 SE 80W soldering station;
- A 7W Laserbee power meter with Ophir head;
- An handmade reamer.

So, let's start!

The soldering station:

7813fc.jpg



The 7W Laserbee:

a94ea5.jpg



The handmade reamer:

2cc363.jpg


This item was built usying a japanese white marker and a extra-fine sandpaper.
I put also some pre-lim paste over the sandpaper, a very gently surface cleaner.
The total diameter is about 11.5 mm, but I can easily vary it adding more coils of sandpaper.
I use this reamer to create a very smooth mirror surface into the heatsink hole,
to have a perfect contact between the parts.


The violet diode and the 0,05mm Indium foil:

8b0635.jpg



All the needed parts:

41ab45.jpg



Diode module gently scrubbed with extra-fine sandpaper:

8ae319.jpg



All the contact parts were extra-cleaned with the best cleaning liquid fluid available today in the market:

4db8a9.jpg



Diode with Indium foil wrapped around, ready to be inserted into the heatsink:

a65e33.jpg



Diode inserted with good pressure into heatsink.
No need to use the set screw.

ceb00f.jpg



Crown pressed into focus ring with the help of a vice:

3d4edc.jpg



Soldering and connect the inside wires:

8f8178.jpg



In order to avoid any possible short, I have added a soft piece of rubber between the screws:

cb645b.jpg



Assembled heatsink:

d359e7.jpg



The final product:

293460.jpg



Cypreus II on Manfrotto minipod:

EjHoJE.jpg



The beamshot:

786b86.jpg


The violet beam is very difficult to capture with a camera, especially to obtain the right colours.
This shot looks like a blue laser, but really is much more violet.
I was forced to use a 15 sec long exposure to have a decent amount of light.


The fluorescence ignition:

1d09a0.jpg


Those air-conditioner remote control buttons seems to be backlighted, but they are off!
This is a pretty fast reaction of fluorescent materials when affected by a violet frequency.


The performance graph:

201e0f.jpg


What an awesome diode! It is very stable, and tend to slightly increase output in the time!
I have limited the test to 90 seconds, but with Cypreus II surely I will have a longer duty cycle.
After 90 sec the copper become slightly warm, so Indium foil and copper parts are doing their dirty work! :)


Finally, the video:



The host was placed at about 3.5 meters from the mouse pad (yes, was a
professional mouse pad ... :yabbem:).
The surface began to smoke immediately! Also the match light at once.
The dot is so powerful, tiny and precise that ignite light wood pretty fast.
Goggles is a must, this is really a dangerous laser !

Conclusions: this is a masterpiece, powerful, precise, rock solid and made with a high craftsmanship.
I wish to thanks a lot two guys that allowed the creation of this project: DTR and Sinner.
See ya soon for my next reviews .. stay tuned! :beer:

Richard.
 
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upaa27

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Jul 10, 2013
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Nice build! I orered a custom host from Sinner! Can't wait until it comes in!
 

IWIRE

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Dec 18, 2013
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Cool build ! Keep them coming ! :) So is the foil better than thermal paste ?
The 405 is a cool diode ! Enjoy !
 
Joined
Aug 25, 2010
Messages
533
Points
63
Yeah it is better, for many reasons.
First of all it is electrically conductive, and this is a must to have a good path.
Then, it rest in place when the diode warm up a lot.
And finally, it does not become dry in the time.
Hovewer it is not simple to use in a round surface: for example, if You do not have the right tolerance, and the barrel is slightly too fat (or the heatsink hole is slightly too small), the Indium foil runs away.
I have found a perfect tolerance with a lot of tries with my handmade reamer. We're talking about hundredths of a millimeter!
 
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Joined
Aug 30, 2010
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Very impressive build, you did a great job! Thank you for the detailed pictures too, very well done! +:beer:
 
Joined
Aug 14, 2013
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Even a .002" interference is enough to make the loose fitting G2 tight enough to have to be turned with a
screwdriver. Getting a good press fit is as much an art as it is a science.
 

rhd

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Beautiful build!

Yeah it is better, for many reasons.
First of all it is electrically conductive, and this is a must to have a good path.

I don't quite understand how / where you're using the foil. At first I thought you were using it between the module and the heatsink (and it kind of looks that way from the photo), but you're not relying on a case pin for electrical conduction, so I think I'm wrong. Are you using it on the tailcap threads?
 
Joined
Aug 25, 2010
Messages
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Hi.
I use it around the diode barrel, and shroud both the barrel and the small copper heatsink where the diode is pressed into.
In this build I do not need electrical path thru the heatsink, but in other builds it will be very useful.
In this build I have used it to eliminate the harmful gap between the diode+barrel and my copper heatsink. More or less, it is a 0.025 mm gap. With my little handmade reamer I will forced to slightly enlarged the hole of the copper heatsink to obtain a perfect fit without any gap.
In that way I have a very good thermal dissipation copper-aluminum-indium-copper. Like a McDonald hamburger :crackup:
 

RayJay

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May 2, 2014
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That is absolutely incredible! Beautiful build! Honestly.. That is some precise work there. I wish I had the patience and skill for that!
I have been thinking of casting modules out of some silver I have. Better than indium foil :yh:

Also, that is one stable diode!! Beautiful work!
 
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sinner

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Oct 27, 2011
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Took a good bit of work but I am glad it turned out just the way you wanted it. Good luck with the other one, Nice and detailed review.

:beer:
 
Joined
Mar 11, 2013
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try a beam shot next to another, different wavelength laser, the color may turn out more accurate.
 
Joined
Jul 20, 2011
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sweet build! might wanna bend the whole host a little bit :p
in case you don't know, i have the prototype of the host
 
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Joined
Apr 2, 2009
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SIX years have passed--this laser is now in my collection..
I necro because this is about the best review and pics ever.



Sinner afaik is slowing down and may not make many more hosts..
His work is excellent. I would suggest that we keep these at this point.

There may never be any more.

TY Richard and Sinner
hak
 




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