did my 1st cateract removal

[Findm-Keepm]

Originally Posted by DaveWM

I know this has come up before but from what I gather there are 3 types of implosion protection

1) separate safety glass
2) bonded glass face plate
3) Tension ring

Those are the "production methods" and the only ones I've seen. Do a search on patents for implosion protection, and you'll see dozens of variations on those three.

Patents related to implosion protection (Freeopatentsonline)


Cheers,

[ctc17]

Originally Posted by marty59

The "bonding material" between the tube and the safety glass is breaking down mostly due to age. Here's my patient:

I have that EXact set and it has the green halo. That must be a RCA style replacement.

[DaveWM]

Originally Posted by VintagePC

I wonder if it would be as effective to carefully go in with a thin needle and force a bit of water water into the cataract? It would probably be quicker than waiting for it to soak in by itself.

yes indeed. the problem seems to be the bonding agent often gets very hard when it turns milky white (RCA CRT's) On these it may take a hard pic like tool to work your way in. I was planning on doing just that to create cavities for chop stick insertion (slow pressure approach).

so now lets have some fun under the main heading of DE-CATing

1) COTL for chip off the glass, get medieval on its glass... lens that is
2) HOTL for heat off use the heat gun, have your insurance up to date
3) PLHMT for pressure, low heat, med time use wedges and unconcentrated solar heat
4) FOWWLT for float of with water long time, let the water slowly break down the bond

Recommneded are FOWWLT if you have time, and PLHMT if you are somewhat in a hurry, COTL and HOTL are only mentioned so they may be known of and avoided.

perhaps some better acronymn's can be developed that will sound snappier.

pretty sure the PLHMT would be best with zenith (gooey) CRT's

I have left of the use of a cutting wire (heated or not) as not sure its needed but maybe should be included as a zenith option

5)COWZO for cut off wiire zenith only... I like the sound of that one

[Kevin Kuehn]

Glad to hear of your success.

I too have a 21FJP22 that needs the cateract removal. I'll wait for warmer weather (probably will be July here) and tackle this outside.

Good luck with your roundie.

Kevin

[ctc17]

Here is my crappy video of the water removal. http://www.youtube.com/watch?v=VeaiuHW0ges

Dave, the patty wagon has been dispatched. Please go outside so they have an easier time finding you.

[DaveWM]

Nice job, looks like the way to go. I am going to look around for a small kiddie wading pool or that old sand box for a water vessel for the roundie.

[marty59]

Originally Posted by ctc17

I have that EXact set and it has the green halo. That must be a RCA style replacement.

Actually, it is a Zenith branded, EIA 274 (RCA) coded tube with a very early 1964 (64-04) date code!