Has anyone tried this glue or see any potential problems with it regarding using it as an alternative to hide glue?
Here is the description:
"Developed by noted restorer and marquetry expert Patrick Edwards, this glue provides the benefits of traditional hide glue in a convenient and easy-to-use liquid formulation. It has good initial tack, a 30-minute open time, and is reversible with heat and moisture – ideal properties for restoration, veneering, instrument making or assembling complex projects. Smears and bleed-through can be removed with a damp cloth, making for easy clean-up prior to finishing."
"Composed of hydrolyzed collagen (hide glue) and urea, the glue cures through evaporation and sets completely in 24 to 48 hours. Non-toxic, it has a 192g Bloom strength rating and a 1-year shelf life that can be extended by refrigeration. Available in 5 fl oz (148ml) and 20 fl oz (591ml) bottles."
Liquid hide glue has been around a long time, and it works very well, although its shelf life is something to watch closely. The gel extender (urea, in this case) causes a slow degradation of the strength. Franklin liquid hide glue now comes with age-dating for just that reason.
All my first instruments were stuck together with Franklin liquid hide glue, and until I encountered a bad batch, I also used if for repairs. Those instruments are holding up very well with never a sign of glue failure after better than 40 years.
I still use it occasionally, but my go-to hide glue is still the hot stuff. It has an initial grab that's hard to beat,
Is the process of adding a gel extender within the capabilities of the home workshop? It seems to me that that way I could have the best of both worlds. I'd know when I made it and how long to give it shelf space and if I needed the quick grab I could always go hot.
Fine Woodworking has had many features over the years; here's one that came up on the first Google:
I did a google search myself. Here are a couple of pages that don't require membership.
This one adds table salt and is very simple.
This one gives details of how to use urea. Not having urea to hand I'll give the salt method a try and report back in a few days.
I've had good luck with Old Brown Glue. Like anything it has taken a little time to learn how to work with it. I still use glue from the pot for many things but Old Brown Glue has worked well when I need the extra open time. Most of the joints where I would be concerned about strength don't require long open time so I still go to the glue pot for them.
"Hide Glue: Historical & Practical Applications by Stephen Shepherd has some great information about using hide glue, working with additives, etc.
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