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Old 01-29-2014, 03:59 PM #1
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Default Help me remove the bottom metal cap of a broken HeNe without breaking the glass

Has anyone tried this?

My idea is to remove the bottom cap/seal while keeping the glass intact in order to slide out the metal interior tube and fit it with some LED's and make a neat lamp out of the laser's glass shell.

I made a lamp with a working HeNe and it turned out really well (HeNe Creation - Check it Out), lets see what I can do with this. I know its not as fun as a working laser, but I got the tube for cheap and discovered it was broken after removing it from the tube. I would like to do something with it!

Hene Tube Pictures - Imgur Link

I imagine baking the laser and pulling it off or boiling it if the cap is glued in some way.

It looks like the glass might be formed around the metal cap and then i am SOL without a glass cutter.

Any input?


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Last edited by Cxrazy; 01-29-2014 at 04:01 PM.
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Old 01-29-2014, 04:12 PM #2
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Default Re: Help me remove the bottom metal cap of a broken HeNe without breaking the glass

Do ypu have a reflow gun or any similar heat gun capable of high temps? May be able to soften that seal and pull it off.

Another thing I have seen a few times with beer bottles is to take a string and coat it in something flameable and light it. Have it tied around the clasento creat a "hot ring" right above that seal. Then run it under really cold water and it may fracture around that ring and seperate it. No idea how well this actually works though.
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Old 01-29-2014, 04:38 PM #3
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Default Re: Help me remove the bottom metal cap of a broken HeNe without breaking the glass

I have seen the flaming alcohol thread to cut a bottle and I have no doubt that it would work tremendously for this. I will attempt to wiggle on it after a copious application of my heat gun and report back before lighting anything on fire.

Hoping someone can chime in that's attempted or completed this before.
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Old 01-29-2014, 06:05 PM #4
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Default Re: Help me remove the bottom metal cap of a broken HeNe without breaking the glass

Too bad ab out the tube, but this idea sounds like fun

I have never attempted the action you are contemplating

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Old 01-29-2014, 08:09 PM #5
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Default Re: Help me remove the bottom metal cap of a broken HeNe without breaking the glass

be sure it is adheisive holding it first, some are held with screws, and others just unscrew off. melles griot uses hot glue, which you can melt if you are careful, but it also tends to melt the endcap if you aren't careful. if you intend to keep the aluminum cylinder, then lightly heat it, then take it and clamp it very gently in a padded vice at a few different rotations to crack the glue bond off the aluminum, then clamp the end cap in the padded vice and gently rock the tube back and forth until you hear the glue crackle and give way and you can then just pull the tube off the rear cap (or front cap, just mind the shutter switch if it has one so you don't clamp on it) the front cap is easier to remove. the hardest part is removing the screws and RTV from the inside to slide the tube out. I'm currently disassembling my orange to troubleshoot it. I need to remove the RTV, thinking i'll try piano wire to cut through it.
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Old 02-01-2014, 01:07 AM #6
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Default Re: Help me remove the bottom metal cap of a broken HeNe without breaking the glass

There have been a couple tubes just like this on eBay that already come apart.

Or, Sam offered me a 14" tube that comes apart, with the bore connected to the mirror still (and also the metal) for $10.

Not sure if that's 100% what you're looking for though.
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Old 02-01-2014, 01:13 AM #7
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Default Re: Help me remove the bottom metal cap of a broken HeNe without breaking the glass

Oh! Are we talking about the mirror mount here? I have one I just clipped off. Or you can thermal shock the glass to metal seal
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405nm: Melles Griot RCS
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591nm: DPSS line
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604.6nm: LOR-150 HeNe line
609nm: Raman HeNe line?
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632.8nm: Spectra Physics Model-127 (>35mW), Model-124B, Model-120, Model-117, others
Melles Griot LHB-580, LHB-190, WHR-570

641nm: Melles Griot RCS
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671nm: CNI PGL-III-C-100
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690nm: custom diode laser
694nm: Portable Q-switched Ruby Laser

1152.6nm: SP-120 HeNe alt. mirrors
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Last edited by ultimatekaiser; 02-01-2014 at 01:15 AM.
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Old 02-01-2014, 01:18 AM #8
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Default Re: Help me remove the bottom metal cap of a broken HeNe without breaking the glass

I think he's referring to the metal disk.

I saw one on eBay with the disk removed, still had the mirror mount attached, thus also the bore as well. Wish it was an easy item to find on eBay, as I would.
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472nm Tunable Omni 532
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476nm Tunable OMNI 532
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496nm Tunable OMNI 532
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520nm 40mW MSV2
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Old 02-01-2014, 02:15 AM #9
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Default Re: Help me remove the bottom metal cap of a broken HeNe without breaking the glass

Just get a hot wire around the can cap seal and heat it. Just need to breach the end and it pops off from the pressure difference. It's pretty easy to pop the glass to metal seal. Just mind the bore is heavy, and by opening it you permanently contaminate the tube.
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375nm: Melles Griot RCS-007

405nm: Melles Griot RCS
430nm: Coherent D3 430-10
441.6nm: Omnichrome 2056-M-A01/4074-P-A03 HeCd laser
457.9nm: Argon Ion Line

472nm Omni-643RYB Whitelight Line
473nm: CNI MGL-473-100, CNI GLP-473
476.5nm: Argon Ion Line

483nm Omni-643RYB Whitelight Line
488nm: Argon Ion Line, Spectra Physics >20mW Cyan DECSL Laser, Coherent Sapphire 488-20 OPSL

496.5nm: Argon Ion Line
501.7: Argon Ion Line
514.5nm: Argon Ion Line
520nm: Trustfire A8 Custom

532nm: CNI MGL-F-3W, Coherent Genesis MX Taipan OPSL, LG Hercules-325
543.5nm: 05-LGR-193 Melles Griot HeNe 3.8mW
Melles Griot LGB-563 HeNe

561nm: Melles Griot 85-YCA-015, Coherent Sapphire 561-20
568nm: Omni-643RYB Whitelight Line

577nm: Coherent Genesis MX Taipan OPSL
583.8nm: DPSS line
586.2nm: DPSS line
588.6nm: CNI PGL-M-80

591nm: DPSS line
593.5nm CNI MGL-H-50 Lab Laser
594.1nm: Coherent 31-2230-000 (4.5mW)

604.6nm: LOR-150 HeNe line
609nm: Raman HeNe line?
611.8nm: Melles Griot LOR-150 HeNe (5mW), LOR-006 HeNe (0.5mW)

632.8nm: Spectra Physics Model-127 (>35mW), Model-124B, Model-120, Model-117, others
Melles Griot LHB-580, LHB-190, WHR-570

641nm: Melles Griot RCS
647nm: Omni-643RYB Whitelight Line
659.6nm: Laser Quantum IGNIS DPSS laser 0.5W

671nm: CNI PGL-III-C-100
676nm: Omni-643RYB Whitelight Line
690nm: custom diode laser
694nm: Portable Q-switched Ruby Laser

1152.6nm: SP-120 HeNe alt. mirrors
1523.5nm: Melles Griot LIR-151 HeNe
3391nm: SP-124 alt. mirrors
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Old 02-01-2014, 03:18 AM #10
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Default Re: Help me remove the bottom metal cap of a broken HeNe without breaking the glass

I may actually use that method for reusing a tube for a HVL purpose.

Though that'll be many months, if not a couple years, down the line
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405nm 500mW
442nm 15mW Melles Griot HeCd
445nm 1W
455nm 100mW LaserBTB
457nm Tunable OMNI 532
465nm Tunable OMNI 532
467nm 1.8W NDB7675
472nm Tunable Omni 532
473nm 2x 100mW Melles Griot lab heads w/ PSUs
476nm Tunable OMNI 532
488nm Single line 35mW
496nm Tunable OMNI 532
502nm Tunable OMNI 532
514nm Tunable OMNI 532
520nm 40mW MSV2
532nm Various pointers
543nm GreeNe 2mW
568nm ~20mW ArKr whitelight line
589nm 126mW PGL-III-C
594nm Rigel-6; 4.75mW + <1mW
604nm 2x <1mW multiline
609nm Ne Penning mixture Ar line from REO 612nm
612nm HeNe 1mW ML 4 line; Raman 6 line
629nm <1mW Raman 6 line
633nm 1-4mw red HeNe
635nm Raman 6 line
638nm 20mW single mode
640nm Raman 6 line
647nm ~10mW ArKr whitelight Kr line
650nm Raman 6 line
658nm LPC-826
685nm 20mW
808nm Modded NewWish pen


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Old 02-01-2014, 04:41 AM #11
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Default Re: Help me remove the bottom metal cap of a broken HeNe without breaking the glass

Quote:
Originally Posted by bloompyle View Post
I may actually use that method for reusing a tube for a HVL purpose.

Though that'll be many months, if not a couple years, down the line
yes. If you intend to re-use it for hobby purposes, I would lightly breach it from the gas return first, so you don't suck a ton of crap into the tube, especially the bore. then remove the seal, but by opening it you WILL get lots of dust inside, as well as other contaminates from the air, such as moisture, skin oils, and other things. So it will need to be cleaned with HCl and Acetone. also make sure that the cathode is sealed up from the air and not touched by your hands, or the protective layer will be destroyed and you will not be able to use it, as there is no realistic way to regenerate it. it'll instantly become an EOL/dead tube, as it would start sputtering all over the mirrors if you ran it, assuming it lights at all.
__________________
325nm: Omni 2056-M-A01 HeCd
375nm: Melles Griot RCS-007

405nm: Melles Griot RCS
430nm: Coherent D3 430-10
441.6nm: Omnichrome 2056-M-A01/4074-P-A03 HeCd laser
457.9nm: Argon Ion Line

472nm Omni-643RYB Whitelight Line
473nm: CNI MGL-473-100, CNI GLP-473
476.5nm: Argon Ion Line

483nm Omni-643RYB Whitelight Line
488nm: Argon Ion Line, Spectra Physics >20mW Cyan DECSL Laser, Coherent Sapphire 488-20 OPSL

496.5nm: Argon Ion Line
501.7: Argon Ion Line
514.5nm: Argon Ion Line
520nm: Trustfire A8 Custom

532nm: CNI MGL-F-3W, Coherent Genesis MX Taipan OPSL, LG Hercules-325
543.5nm: 05-LGR-193 Melles Griot HeNe 3.8mW
Melles Griot LGB-563 HeNe

561nm: Melles Griot 85-YCA-015, Coherent Sapphire 561-20
568nm: Omni-643RYB Whitelight Line

577nm: Coherent Genesis MX Taipan OPSL
583.8nm: DPSS line
586.2nm: DPSS line
588.6nm: CNI PGL-M-80

591nm: DPSS line
593.5nm CNI MGL-H-50 Lab Laser
594.1nm: Coherent 31-2230-000 (4.5mW)

604.6nm: LOR-150 HeNe line
609nm: Raman HeNe line?
611.8nm: Melles Griot LOR-150 HeNe (5mW), LOR-006 HeNe (0.5mW)

632.8nm: Spectra Physics Model-127 (>35mW), Model-124B, Model-120, Model-117, others
Melles Griot LHB-580, LHB-190, WHR-570

641nm: Melles Griot RCS
647nm: Omni-643RYB Whitelight Line
659.6nm: Laser Quantum IGNIS DPSS laser 0.5W

671nm: CNI PGL-III-C-100
676nm: Omni-643RYB Whitelight Line
690nm: custom diode laser
694nm: Portable Q-switched Ruby Laser

1152.6nm: SP-120 HeNe alt. mirrors
1523.5nm: Melles Griot LIR-151 HeNe
3391nm: SP-124 alt. mirrors
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