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Not late as I've not actually done anything yet!
I'm vegan though so hide glue doesn't sit comfortably with me (not that I know for sure modern variants are made with animal substrates).
For context this is for refitting mouldings around glazing in an external door. They were originally held in with what felt like a type double sided tape. It was strong enough, but pulled apart relatively easily and was somewhat elastic. I think I'm just going to use veneer pins when I fit them back.
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If you're vegan it's no go as hide glue (even the modern stuff) like almost all traditional glue is made from boiled bits of dead animal I'm afraid.
Also it's not really appropriate for what you would be using it for as condensation would eventually cause the glue to fail.
I'd out a thin bead of glazing putty either traditional linseed oil ones or modern mastic tube stuff. Behind the bead and then fix the beads with panel pins.
Sorry for the late reply. Hide glue would do the job the ready mix bottles do have a short shelf life though, you can get the traditional stuff but you need a double boiler and it's messy and smelly.
From the bottle it's applied like pva and holds as well for as long as needed but unlike pva the bond can be reversed with the application of steam.