another cat removal

[ctc17]

That was in my pre camera days. Its on my website. Heating the wire is not necessary if you let it sit in the sun and warm up for a bit.
http://boxcarcabin.com/halo.html

[ctc17]

Keep in mind you are going to have to clean up whatever solvent you use other than water. If you want the tape or silicone or whatever to stick you are going to have to remove all the brake fluid.
Best just to be patient and use water. Mine cleaned up so nice and the silicone is sticking so well.
Good things come to those who wait.

[Electrohome]

The above post is spam which against VK rules-Please remove-Thanks

[ctc17]

Originally Posted by Electrohome

The above post is spam which against VK rules-Please remove-Thanks

PM is being sent to mod as your last 5 posts were exactly the same. Your posts are spam.
Maybe a virus or someone got your password...I hope.

[miniman82]

Just hit the button, and mention spam- the mods will handle it.

[DaveWM]

checked it this am, there is a radial crack in the pva starting from the edge about 2" long, progress at at last... I will get some pics later. There is only one such crack, I would like to see a few more.

[DaveWM]

had a nice new deep crack in the pva, I was able to pick out a chunk about
1" by 2".

it would be a nice sized piece to play chemistry on.

I will prob stick in in a pan of brake fluid, maybe a side by side comparison 1/2pan of brake fluid pan 1/2 pan of water.


Water does the trick you just need to be more patient than the owl on the tootsie pop commercial...

[bgk283]

I picked this up in January, let it soak in water for 2 months, today, nice and sunny in NY, put it out in the yard, the mask literally popped off in about an hour. Ive heard someone say that patience with these things is the key. cheers, Bruce

[DaveWM]

nice series of pics, you can see the "fingers" working across as the pva releases. I could prob do the same to mine now, I just dont have a decent way to hold the CRT in place (for the sun bake).

[ctc17]

Did you silicone that one or just tape it? Im not a fan of just taping it, the dust is going to find a way in there. The GE silicone 1 works very well and adds alot of strength to the glass. You can always cut it off if you need to.

[bgk283]

I will give it a try, thanks. Having only done this a couple of times, i figured if the side was taped it would be good. The silicone sounds like a good idea though.

[ctc17]

Tape kinda drys out and flakes off especially in a hot dry environment like a tube tv. The way hawkeye did it was used a solid ring of the double sided tape with no gaps, his tape is more like weather stripping. I went with the bead of silicone because I never want to remove the crt for cleaning.
Its all experimenting, trial and error and learning. There really is no wrong way unless you break the glass.

[DaveWM]

Done...

I got tired of waiting so I put in out in the sun with a few chop sticks around the perimeter, about 45min total and it popped off.

I have a few scratches on the lens (not the CRT) that I have to deal with, I dont know how they got there but they are there and right in the field of view.

anyone have suggestion on scratch removal? I was going to head down to the auto parts place to see what products they have, or maybe just take it to a auto glass shop and see what they can do.

[DaveWM]

another one done, 20min tops.


This was one of the green cats found on zenith tubes. I put it in the sun for about 15min, then used some SS saftey wire (.007 IIRC) and looped it around the perimeter just under the lens. I tied it off with enough space to get a thick piece of card board under it to protect my hands. then just started pulling. It cut thru the gelitin consistancy plastic goo. Once I pulled it completly thru the lenes lifted off. Most of the goo stuck to the lens, very nasty stuff. I next put the lens in my wading pool (in the shade so the water is cool), and the goo quickly set up. allowing a pretty clean pull off (was like rubber coming off after cooling). the lens will still need some cleaning but its 95% goo free now.

Bottom line is the green is easy but a bit messy, the white is a bit more of an effort but pretty much mess free.

[Ampico-kid]

Another successful cat removal. I have a 21FJP22 that had a pretty severe cataract.




I decided to try the "water" method and plopped it face down into an overturned garbage can lid. It sat there for about 3 weeks.

Today I wanted to see how much progress I made and pulled the tube out of the water and turned it over and placed it into a plastic recycling can. It's a perfect fit and a stable way to hold it. I then took several wooden paint stir sticks and began to push them in between the tube face and the safety glass and sat it out in the sunlight for a while.





I started to notice the safety glass showing signs of release from the bonding agent, and over the coarse of the next hour I slowly pushed the sticks in further and further. After about an hour I could see I was getting close.





All of a sudden the sticks all fell to the ground and I picked up the safety glass off of the face of the tube.









I then carefully peeled the bonding agent off of the face and that was it. Done.


Here's the bonding material after removal from the face of the tube.





It took just three weeks to accomplish. Patience does pay off in the end.

Bob