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Old 01-10-2017, 08:28 AM #2721
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

A set of CO2 laser optics is on sale at e-bay. A BIG (1.75" dia) ZnSe lens and a set of total reflecting mirrors. And only for 150$. I think, this is a great bargain. I have already bought a couple of lenses so I don't going to buy this lot.


Huge ZnSe lens + HR total reflectors set for high power big CO2 laser | eBay



Last edited by Laserbuilder; 01-10-2017 at 08:30 AM.
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Old 01-10-2017, 09:02 AM #2722
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

Thanks, nice lenses. What would such huge lenses for 10.6 be used with? Why so large?

If you happen to see any really big PCX lenses with AR coatings whether for VIS or near IR, I am interested them. I found some 5 inch diameter 1064nm PCX lenses a few months ago I am happy with, always looking for more for my big beam expander projects.
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Old 01-10-2017, 10:32 AM #2723
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

Such big lenses are used in multi-kW industrial lasers for metal cutting. Finding optics with neccesary AR coatins is hard, all optics that was scrapped from our University laser lab didn't have any coatings at all.
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Old 01-12-2017, 01:24 AM #2724
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

561nm OPSL head:

Coherent Sapphire 561-20 OPSL Continuous Wave Visible Laser unit 2
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Old 01-12-2017, 01:28 AM #2725
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

Dang nice find... I would buy it if I actually needed it... but without a driver it'd be a royal pain to run.
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Old 01-12-2017, 08:10 AM #2726
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

Quote:
Originally Posted by H2Oxide View Post
I want it! Just can't afford it right now.
Need to source a driver for it anyway, so not possible. Nice find though.

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Old 01-12-2017, 04:24 PM #2727
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

Alaskan, could you tell me what is PCX as a lens material? Is it a sort of glass?

Sorry for offtopic.
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Old 01-12-2017, 04:28 PM #2728
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

Quote:
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Alaskan, could you tell me what is PCX as a lens material? Is it a sort of glass?

Sorry for offtopic.
PCX just means Plano-Convex
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Old 01-12-2017, 04:50 PM #2729
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

Most household magnifying lenses are double convex but a PCX is flat on one side and convex on the other.


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Old 01-12-2017, 04:58 PM #2730
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

Yep, that's it, round on one side, flat on the other. Better than biconvex lenses for use as beam expander collimators.
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Old 01-12-2017, 05:49 PM #2731
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

Thanks. Alaskan, could you, please, PM or email me? I think I can try to help or at least try to find neccessary information about lenses you need.

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Old 01-13-2017, 01:09 AM #2732
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

I am thinking about using a double concave mounted in a length of PVC tubing, the tubing can be slit lengthwise to accommodate the lens that will be glued in place then mount a PCX lens in a slightly wider length of PVC so that it will slide back and forth over the 1st length of PVC with the double concave in it.

Both of these will slide over a length of aluminum bar stock with a NUBM06 mounted in the end with the GBall left intact.

Rolled up cardstock paper can be used to shim the fit so it slides snugly.

Later I may use a cyl pair after the 06 with Gball intact and this double adjustable expander setup, it's worth a try.
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Old 01-13-2017, 06:22 AM #2733
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

I want to see that, especially with diodes that have the GBall intact.
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Old 01-13-2017, 01:26 PM #2734
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

Good price with free shipping

Xantrex XFR 20-60 Programmable DC Power Supply 0-20V 0-60A, XFR20-60 White Face

Xantrex XFR 20-60 Programmable DC Power Supply 0-20V 0-60A, XFR20-60 White Face | eBay
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To shorten my signature I have moved most of my laser related web links to this forum page, the second post in that thread shows most of my builds... Alaskan's Laser Links: http://laserpointerforums.com/f44/al...ml#post1449395


Sincerely investigate any of these three short quotes as new concepts and you've taken your first step into a larger world:

"I regard consciousness as fundamental. I regard matter as derivative from consciousness..." - Max Planck. "Everything we call real is made of things that cannot be regarded as real" - Neils Bohr. "What we call physical things and events do not exist independently of subjective experience..." - Deepak Chopra.

Each of these three rabbit holes go deep, ending up in the same place.

Useless troll fighting.
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Old 01-14-2017, 03:46 AM #2735
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

Quote:
Originally Posted by Alaskan View Post
Good price with free shipping

Xantrex XFR 20-60 Programmable DC Power Supply 0-20V 0-60A, XFR20-60 White Face
Not really. They show up for $200 and under sometimes. I will personally sell you a power-ten brand (subsidiary of sorensen/xantrex) 0-20V 0-50A unit for $200.
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Old 01-14-2017, 03:54 AM #2736
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

@ cyparagon... I am looking for power supply..Pls email me.
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