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Re: [TCML] CRT wire - harvesting safely



I don't know whether this only applies to the particular CRT I was disposing of or all of them.

I was dismantling a PC monitor to salvage parts and I noticed that the service manual had a section about how to safely dispose of the CRT. It said that there is a small recess at the very end of the tube and to take a small screw driver and punch it into the recess to release the vacuum. After I removed all of the electronics from the rear of the CRT, sure enough, there it was. All I had to do was take a screw driver that fit into the recess and tap it with a hammer and it went right through. Actually, I don't think I had to remove very much to get to the recess, other than the shielding.
Paul
Think Positive

----- Original Message ----- From: <mrapol@xxxxxxxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Sunday, February 07, 2010 6:04 PM
Subject: Re: [TCML] CRT wire - harvesting safely


I have salvaged wire from CRTs and TVs. With patience you can crack the wire wrapping into its constituent pieces and never damage the CRT itself. The wire is loaded with glue/shellac though. Microwave fan wire is much easier to reuse.

PBT


----- Original Message ----- From: "Jim Mora" <wavetuner@xxxxxxxxx>
To: "'Tesla Coil Mailing List'" <tesla@xxxxxxxxxx>
Sent: Sunday, February 07, 2010 4:54 PM
Subject: RE: [TCML] CRT wire - harvesting safely


Hi Brian,

On older b/w sets, we used to hammer a screwdriver into the end of the
electron gun. This may be harder now as the necks are thinner. You probably can remove the focus clamp etc and then the yoke if you are careful. In any
case, be sure to wear goggles or better yet a safety shield.
I did this with a PC monitor recently as I scrap out copper. I was surprised that the yoke was wound with two sizes of Litz wire and was easily unwound
:-)I won't be scraping that out!

Jim Mora

Careful is essential like most of the hazards we deal with. Anyone with
current vacuum equalization experience please chime in for my benefit too.

-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of Brian Hall
Sent: Sunday, February 07, 2010 8:36 AM
To: tesla@xxxxxxxxxx
Subject: [TCML] CRT wire - harvesting safely




I managed to get the CRT out of a little old portable TV, with a 4 by 5 inch screen, and it has lots of lovely copper wire that I want to get out and use for a secondary coil. I know these tubes are under a vaccum of sorts and I will have to melt off a bit of glue and bend off some posts with pliers, so should I pop the tail end of the tube before I start trying to extract the wire? If so what is the safest way to pop a tube or otherwise get at that
wire?


---------------------------------- Brian Hall





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