I used a small crock pot… it doesn’t have any switches, it’s
either on or it is off. It has a plastic lid and is really
not much of a cooker… it’s the sort of thing you’d
use for nacho cheese at a party.
I cut a hole for my glue jars in the top. If you do it try
to use jars that are the same size since you’ll probably
find having a few is helpful.
I used a digital kitchen thermometer to monitor the
temperatures of liquid in the thing for a couple of days…
for hide glue you want to glue to be about 140
degress and for that to work I found the water around
it had to be around 150 degrees. I used water in
the jar to test… since the jar is open in use, it loses
that 10 degrees. I drilled 3/8” holes a few at a
time until the liquid in the jar hovered at 140 degrees.
The holes allow heat to escape from the surface of
the water in the crock pot.
Pretty simple. Your crock pot may vary in performance
so go a couple of holes at a time and give it time so
you know what your median temperature for the liquid
in the jar will be. I found it is pretty consistent.