Heard a little ping today while putting together a gallon of strawberry and looked down to about a 1/4" of the top of my hydrometer broken off. Glad I had another one. Question, can I just epoxy the end shut and it will be as good as new?
I've never heard of that being done but remember that even a small amount of additional weight added will affect the accuracy. I'd try super glue assuming that would be lighter than epoxy then compare the two in a beaker of water.
I do have an extra one but everything for winemaking I have to import from the U.S. A $5 item turns into $10 and a $90 supplies order turns into $180. That's a good idea on the plastic one. I'll have to hunt for one online. I've not seen one advertised on anyone's site.
Wiz - your situation is understandable - again I would say that you can use your mended hydrometer. A very small change in weight from the glue would probably not influence your reading and even if it did, a change of 1 or 2 points (say 1.088 instead of 1.086 or 0.996 instead of 0.994) is not going to change anything since you are looking for relative readings rather than precise numbers.
You are well advised to get another though when it's convenient for you and then you can use the mended one as a backup.