The glue ns using says it dries in an hour yet cures in 24 hours. What is the difference and also is there advantage in leaving clamps on for the complete 24 hours? Assume strength is important.

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What is the distinction

As covered rather in this ahead Q&A, how long walk glue require to dry? all PVA timber glues "dry" by literally dry initially and then there"s a curing phase, wherein they experience a chemical/structural readjust and harden more completely and acquire closer to their full strength.

So her glue says it dries in an hour and takes 24 hrs to cure, for this reason it"s just holding the timber together at hour one and closer to gift at complete strength ~ 12, and has nominally achieved max strength after a day. However remember those times space averages, based on presumptions of temperature and humidity and wood moisture content. If any or all that those are various where you are your glue dry times will certainly be different. Even using air-dried wood rather than kiln-dried wood your dry times will differ slightly, in the very same workshop ~ above the very same day.

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It"s since you can"t always know for sure what you"re managing that you err top top the next of caution, uneven you have actually no choice. So it is an excellent general exercise to leave clamps on much longer than you think is strictly important if friend can. If there"s nothing various other than your impatience urging friend to eliminate your clamps and go on come the next step stand up to the urge!

is there benefit in leaving clamps on for the full 24 hours?

Rarely. However, there"s no downside to it either (other 보다 the clamps being tied up and not accessible for various other uses).

To placed this an ext generally: the doesn"t pains to leaving clamps on also long, however can if you take it them off also soon.

As i cover in mine previous Answer, if you take clamps turn off too beforehand the glue joints can open up very slightly and result in greatly lessened joint strength. Yet one detail I want to include is that even an invisibly small shift in place or opening in between boards can have a profound impact. So her joints don"t have to be noticeable open or the end of alignment because that them to it is in weaker than they could be — which is literally more powerful than the wood around them. This is the goal to aim for, whether the workpiece in question demands it or not. Because, why not?