> What keeps the plastic bottles from melting in the pot over time?

The plastic glue bottles do not melt at 160 F degrees.  I thought they
would, too, but they don't.  A cheaper bottle will split out at the
bottom from all the flexing it gets, but my special bottles, do not do
that.  I can use them 4-5 fillings, which is a year or more, before they
develop small leaks at the bottom.  Plus the tops do not easily blow off.

> The original question was how the "Titebond" version of liquid hide
> glue compared with the old-fashioned method.

The store-bought brand I cannot vouch for as I have never used it
(elevating nose and sniffing <G>).  However, most people who ask that
question just want to use it because the hot version is usually so futz
intensive that they wish to do without all the making of lids, adding
water, leaving lid off, adding glue, and stirring and stirring, and
stirring.  With the bottle method, the most futzing you do is shake the
bottle every so often.  I do know they must add something to the Titebond
liquid to keep it from molding so their additives are there in the glue.

Oh, by the way, I forgot to mention that using the bottle with hot glue
requires you to do something to prevent glue going all over.  That is,
one must slightly squeeze the bottle before upending it to apply it with
nose down.  This prevents the glue from dripping when applying a small
amount from the bottle and also keeps the tip clean by sucking the glue
back into the bottle when you set it back into the pot.

I also made a hot bottle cozy from a sponge rubber coke can caddy.  This
is for those wimps who say the bottle is too hot to handle.  It is not
for me, but I have used this method successfully for amateur rebuilders I
train.

D. L. Bullock   Piano World   St. Louis