PVA Glue is the category that includes
standard white and yellow glue. It is the most common glue used
by woodworkers. Unless you are working with materials that will
be constantly exposed to water, PVA is the glue you probably will
use over 95% of the time.
The glue solvent is water and works by intertwining the fibers
of wood with the polyvinyl acetate as the water evaporates.
It is inexpensive (compared to other glues), non-toxic, and has
a long shelf life. The basic difference between white glue and yellow
glue is that yellow glue has a shorter drying time (open time).
Its only real drawback, being a water based glue, is that it is
not very resistant when exposed to high moisture levels. There are
new PVA glues on the market that are more water resistant than the
standard white glue, but in this case it might be best to read into
other glues that might be better suited for your application.
Another reason to maybe think about not using PVA glue is the fact
that the high water content in the glue may not work well with certain
types of wood that either warp easily (ie. beech), or are oily (teak).
Do no let PVA glue freeze. It will not be good afterwards. With
white glue, if the glue has frozen and thawed, it will dry a white
cloudy color instead of clear.
Some woodworkers prefer either white or yellow glue. Myself, I
take the white glue because it gives me an extra 5-10 minutes of
open time to set up my clamps properly. It also dries clear instead
of a yellowish color.
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