Super-strong glass adhesive?

ThisIsWeird

Hi.

I normally wouldn't entertain doing such a thing, as I know it would be pointless. But there are a couple of reasons I'd entertain it in this case - the glass range is discontinued, and the contact area is pretty sizeable.

The diameter is 20mm, and the contact surface clean and matey - no chips or missing bits.

Anyone know of a glass adhesive that could make a decent fist of this? Ta.

nofoollikeold

1. I'd use Araldite - the slow (24 hour) cure one.
2. Thoroughly clean top of stem and base of glass, without dislodging any chips.  
3. Determine how you are going to hold the two parts while the glue dries.  Perhaps rubber bands around both, two bands at 90 degrees to each other?
4. Warm the Araldite (adhesive and hardener) - leave on top of a working radiator, NOT on an electric or gas fire, for 15 minutes.
5. Mix the adhesive and hardener 50:50 on an old piece of card.  You'll only need a pea sized piece of each.
6. Leave the mixed adhesive for 10 minutes or so to get the worst of the air bubbles out.
7. A light smear of adhesive on both surfaces.  Good coverage but a thin layer.
8. Bring stem and glass together and secure as desired (e.g. rubber bands). 
9. Leave for an hour or so, then, with a very sharp knife (e.g. scalpel) cut away any excess glue "squeeze" from the joint.  Very delicately to avoid disturbing joint as adhesive will not have set at this stage.
10. Leave in a warm place (e.g. airing cupboard) for 24 hours, more if possible.
11. Don't ever put the mended glass in a dishwasher.  Always wash by hand with great care.
12. Alternatively, see if you can get a second hand one on something like Ebay.  

FreeBear

If you want an invisible join, most two pack adhesives won't be suitable. There are a range of adhesives that have been developed for the optics industry that are crystal clear. Unfortunately, many of them are UV curing... That said, Loctite do some structural adhesives that are insanely strong (glued someones lunch box to a table years ago, and I think it is still there ) and don't need a UV lamp to cure.

fatbelly

Loctite superglue glass, if you can find it

ThisIsWeird

FreeBear said:

If you want an invisible join, most two pack adhesives won't be suitable. There are a range of adhesives that have been developed for the optics industry that are crystal clear. Unfortunately, many of them are UV curing... That said, Loctite do some structural adhesives that are insanely strong (glued someones lunch box to a table years ago, and I think it is still there ) and don't need a UV lamp to cure.

Since the stem is coloured, I don't think an opaque adhesive would be an issue.

The uv-setting type sounds promising, tho' - will it cute in sunlight, or does it need a lamp?

Eldi_Dos

If you do decide to go ahead with repair, get a small container with dry sand and place the bulb section of glass in this stem upwards.Once joined some two pound coins on bottom of base to apply downward pressure while adhesive cures. You can get superglue debonder to clean up any overspill.

Silvertabby

Is this a Denby Jet wine glass by any chance?  If so, it may have been discontinued by Denby, but if you google "Denby Jet wine glass" lots of reduced price options pop up.  Most are sold in pairs, so you'd have a spare for next time.

Personally, I wouldn't try to glue a glass that someone would be drinking out of.

FreeBear

ThisIsWeird said: The uv-setting type sounds promising, tho' - will it cure in sunlight, or does it need a lamp?

One would normally use a broad spectrum UV lamp - e.g. A metal halide lamp, although adhesives are being developed for use with narrow band LED UV lamps. Sunlight will also work, but it will take longer for a full strength bond to develop. The UV content of sunlight is not easily quantifiable, so you can't say X minutes of exposure is equivalent to Y minutes under a UV lamp.

ThisIsWeird

Silvertabby said:

Is this a Denby Jet wine glass by any chance?  If so, it may have been discontinued by Denby, but if you google "Denby Jet wine glass" lots of reduced price options pop up.  Most are sold in pairs, so you'd have a spare for next time.

Personally, I wouldn't try to glue a glass that someone would be drinking out of.

Thanks. Yes it is.

I've already bought a few, but they are getting more rare - the white wine size, more so.

I'd only use this glass myself - quite used to spilling it down my front...