Dead CRT disposal?

[Kevin Kuehn]

Environmental concerns aside, what's the safest way to de evacuate a couple old CRT's so that they can be disposed of? I think I remember reading someplace that you can take a center punch to the keyway of the neck connector, which would break the evacuation stem? I'd really prefer it doesn't implode.

[jr_tech]

I have never had one implode by knocking off the tip seal...I usually use just a small hammer to crack the tip. Driving a sharp scribe through the HV button works well also.
If you wrap in an old heavy blanket, it will provide a measure of protection and also contain most pieces for easy disposal should the tube implode.

jr

[Down Under]

I've always just hit the neck with a hammer. Usually I leave the tube in its cabinet if possible, but if I can't, it's still safe at close range. Never had a tube implode yet. If you watch Youtube, there's a video of a guy pouring liquid nitrogen down a pipe that ends just above the face of an upwards facing tube... I was amazed how quickly it imploded!

[N2IXK]

Cracking the evacuation tip is my usual method for "modern" era tubes (those that have some form of integral implosion protection). Have used the anode button method a ew times, as well.

An older tube without any tension band or bonded faceplate can really be a bomb if it suddenly lets go, and I wouldn't want to be right next to it if it did. I would suggest putting the tube inside a plastic trash bag, then a HEAVY cardboard box. Seal the box, and then pop the envelope with a thin metal rod piercing the side of the box.

A pellet gun or slingshot from a decent (40-50') distance makes a nice science demonstration, if you have a safe place to do it (and the ability to cleanup the glass afterwards).

[marty59]

My vote for the scribe through the anode procedure.

[W3XWT]

A well-aimed 30.06 slug makes a nice science experiment and marksmanship demonstration...

[Winky Dink]

Put it in a plastic trash bag (If you're British, that's a black bin liner), stand back eight feet and throw a rock at it.

[Sandy G]

Originally Posted by W3XWT

A well-aimed 30.06 slug makes a nice science experiment and marksmanship demonstration...

I was WAITING for somebody to come up w/the most FUN way of dispatching a dead CRT...MY Uzi on full-auto works DANDILY, too...But everybody thinks I'm a "Froth-At-The-Mouth" Gun-Nut type, so I can't talk about it...(grin)

[dieseljeep]

Originally Posted by Down Under

I've always just hit the neck with a hammer. Usually I leave the tube in its cabinet if possible, but if I can't, it's still safe at close range. Never had a tube implode yet. If you watch Youtube, there's a video of a guy pouring liquid nitrogen down a pipe that ends just above the face of an upwards facing tube... I was amazed how quickly it imploded!

Just ask the people that bumped the neck when they carried it through the door and weren't watching. Hissss!

[Down Under]

Originally Posted by Sandy G

I was WAITING for somebody to come up w/the most FUN way of dispatching a dead CRT...MY Uzi on full-auto works DANDILY, too...But everybody thinks I'm a "Froth-At-The-Mouth" Gun-Nut type, so I can't talk about it...(grin)

I just can't help but think of Arnie's line in Terminator 2.... "Uzi 9 millimeter" You have to put on his accent when you say that!

As to knocking the neck off a CRT I was carrying, I luckily haven't had that happen, but I did break a CRT glass seal when fitting a yoke. The plastic cover had rotted away exposing the seal. It took ages before the hissing stopped, and when powering it up, there was a lot of internal arcing. Of course, I was 12 at the time!

[bgadow]

I've used the anode button on the last 4 or 5 I've done; it doesn't take much of a tap with a hammer to poke a hole right there. I'd still suggest a heavy blanket over it, just in case. Nice thing is you end up with absolutely no broken glass (assuming it works right).

[M3-SRT8]

Beretta 92FS. At 50 feet I can take off the neck for you, if you like...

[kx250rider]

Originally Posted by marty59

My vote for the scribe through the anode procedure.

Better make it SHARP, and fine-gauge, or the force of driving the punch or scribe into the metal anode, will implode the tube by breaking the side wall.

Charles

[Boobtubeman]

How about a sharp drill bit to the anode on a cordless drill?

SR

[Phil Nelson]

I have read about the drill method before. I suppose the idea is to stop when you hear a slow Hsss. I would still wrap the victim in a quilt and wear protective gear, just in case. One sharp piece of glass to the jugular can really spoil your day.

Phil Nelson