Reply To: Abandoning a glue-up
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Unfortunately I do not have any first hand experience with the hold-heet glue pots, although I would love to own one at some point in the future.
I have seen youtube videos of people preparing a smaller batch of glue in a glass baby food container or small mason jar and heating it in that type of unit, but you may have to surround it in a bit of water to prevent the glass from getting too hot.
If you are concerned about making too much at once, you can always pour any unused glue (after the initial preparation) into cheap plastic ice cube trays, let it cool to room temp, and then stick it in the freezer. It allows you to just take a few cubes out when needed and re-heat them. To my knowledge, a freeze-thaw cycle does not affect hide glue’s performance, only overheating does.
On a side note, http://oldbrownglue.com contains lots of information on the preparation & use of traditional hide glue. I have used the bottled glue they sell, but prefer using the traditional stuff, so I’m not making any type of endorsement of their products.