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Old 02-28-2014, 05:10 AM #1
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Default Opening HeNe tubes nondestructively

This applies mostly to Melles Griot tubes. I just discovered that pesky hot-glue (not RTV) dissolves and softens in Isopropyl alcohol! should make these tubes easier to open short of putting them in the oven! thoughts?


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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

Last edited by ultimatekaiser; 03-19-2014 at 07:24 PM.
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Old 02-28-2014, 07:13 AM #2
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Default Re: Opening HeNe tubes nondestructively

Yep, been doing that for years! Even the RTV softens enough you can push out the tube carefully using a pipe around the larger envelope diameter or cathode plate (if you use very hot IPA).
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Old 02-28-2014, 07:57 AM #3
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Default Re: Opening HeNe tubes nondestructively

Quote:
Originally Posted by Sigurthr View Post
Yep, been doing that for years! Even the RTV softens enough you can push out the tube carefully using a pipe around the larger envelope diameter or cathode plate (if you use very hot IPA).
never knew that. I really need to get my orange out of its cylinder non-destructively. any tips?
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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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Old 02-28-2014, 03:28 PM #4
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Default Re: Opening HeNe tubes nondestructively

I have removed hot glue many times by freezing. Just put it in the freezer or spray it with some liquid
propane. (Be careful not to set yourself on fire.) Dry ice or liquid nitrogen also work. It becomes so brittle
that it just snaps off. This probably won't work well for removing laser tubes, but is great any time the glue
is exposed. Sometimes it all comes off leaving behind no residue.
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Old 02-28-2014, 04:01 PM #5
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Default Re: Opening HeNe tubes nondestructively

Quote:
Originally Posted by ultimatekaiser View Post
never knew that. I really need to get my orange out of its cylinder non-destructively. any tips?
if i had an orange (again) i wouldn't try to extract it. too many things can go wrong. that's me tho......
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Old 02-28-2014, 04:52 PM #6
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Default Re: Opening HeNe tubes nondestructively

If yours is a normal MG tube, use a hacksaw to saw off the ends of the tube (carefully)! Use an eyeglass screwdriver to pry out some of the rubber stuff, and use a knife blade to unscrew the set screws. I tried using the hot water trick on the endcaps but it didn't work too well, a metal hacksaw is much easier. Aim to cut in maybe 3/4 of an inch in from where the plastic endcaps meet the metal tubing, and try and shine a flashlight in through your cut so you know where you are before you cut all the way through.

I find the screwdriver idea to work pretty well, the rubber stuff is quite tough but an eyeglass screwdriver will get the stuff out. If you can see the glass (or the orange tape for one of the spots) at each spot where the rubbery stuff was, then tug (gently) on one of the mirrors on the end of the tube the tube will slide out with a bit of resistance. The rubbery stuff isn't strong enough to hold the laser in place in the tube once you've cleared out the center of each of them.

This is how I've extracted like 6 MG tubes now and my REO orange HeNe. Hope this helps
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Old 02-28-2014, 06:20 PM #7
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Default Re: Opening HeNe tubes nondestructively

Quote:
Originally Posted by cheech226 View Post
if i had an orange (again) i wouldn't try to extract it. too many things can go wrong. that's me tho......
It needs adjustment, and I can't do it in the cylinder

Thanks for the help guys I scraped our most of the rubber stuff In centre, but it appears to have a bunch. It's still stuck. Thinking some wire might do the trick without risking the tube.
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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

Last edited by ultimatekaiser; 02-28-2014 at 06:24 PM.
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Old 02-28-2014, 08:41 PM #8
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Default Re: Opening HeNe tubes nondestructively

Quote:
Originally Posted by ultimatekaiser View Post
This applies mostly toe Melles Griot tubes. I just discovered that pesky hot-glue (not RTV) dissolves and softens in Isopropyl alcohol! should make these tubes easier to open short of putting them in the oven! thoughts?
Just use a hot air gun

Peace,
dave
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Old 02-28-2014, 10:55 PM #9
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Default Re: Opening HeNe tubes nondestructively

The thought of finagling a 611.9 tube out of a cylinder makes me cringe ... Though it is a 4mW rated tube, very possible that it's a bit out of alignment.

Hell, when aligned, you may get more lines from it.
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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
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488nm Single line 35mW
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502nm Tunable OMNI 532
514nm Tunable OMNI 532
520nm 40mW MSV2
532nm Various pointers
543nm GreeNe 2mW
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589nm 126mW PGL-III-C
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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
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Old 02-28-2014, 11:11 PM #10
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Default Re: Opening HeNe tubes nondestructively

Indeed. Believe me i thought about it very hard. It's rated 4-10mW and is used according to the source. I backed out the screws and used a flashlight and it looks relatively new according to what little I can see, it's like new and clean, and it starts right up. So I'm positive it can do a lot more than 1 and a half mW. My Allen simply can't get in there with it in the cylinder however, so it has to come out. Plus, then I can see the full status of the tube.
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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

Last edited by ultimatekaiser; 02-28-2014 at 11:11 PM.
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