Gluing glass

[David Chesler]

Someone knocked something heavy on my 1989 Model 8100 (nominally 32oz -- I think it's called "Midnight" on this site) and the neck of the bottle broke off.
I've reattached it with Loctite glass glue. Thanks to hints here I managed to find the correct density of brine, and satisfactory dye and detergent. My problem is because of the mechanical advantage no matter how well the glue sets if I screw the cap on tightly enough it pulls off the repair, even when it has negative pressure (that is, I screw it up while hot.) I tried putting a quarter behind the rubber gasket in the cap, but I can't make a good seal.
This leaves me with a nice lamp, but once it gets hot, vapor escapes, and the water level is dropping over time.
Any ideas how to make it gas-tight again?
The break is just below the threads on the neck. Also a piece of glass came out below that, but it glued well. Perfect conchoidal fractures, no missing bits, and I cleaned everything well before applying just a small amount of glue.

[Johnny]

personaly i think its pretty risky to use a bottle that has been broken due to when the bottle heats up there will be pressure inside it which i expect will blow the glued repair off, why not just buy a new bottle? it be alot safer as most instructions with lamps state not to use if dropped , cracked etc.

[Critter]

+1 here....get another bottle, they're everywhere.



Johnny said:

personaly i think its pretty risky to use a bottle that has been broken due to when the bottle heats up there will be pressure inside it which i expect will blow the glued repair off, why not just buy a new bottle? it be alot safer as most instructions with lamps state not to use if dropped , cracked etc.

[Keith]

I agree, replace the bottle.  One thing to add though, if your screw cap is still intact KEEP IT.  They are hard to replace.  

[David Chesler]

OK, you have all convinced me. (Yes, the cap and liner are in good shape.) Thanks for the advice.
Where would I buy a bottle? I looked in the Buy/Trade/Sell, and it seems to be mostly "Buy". Am I missing something?

[Keith]

Ebay, craigslist, thrift stores.  You may have to buy a whole lamp.

David Chesler said:

OK, you have all convinced me. (Yes, the cap and liner are in good shape.) Thanks for the advice.
Where would I buy a bottle? I looked in the Buy/Trade/Sell, and it seems to be mostly "Buy". Am I missing something?

[David Chesler]

I've got everything in good shape but the bottle. I'm trying to achieve some sort of cosmic balance 

Keith said:

  You may have to buy a whole lamp.