There are many exams for when your liquid disguise glue has gone
unhealthy – the most typical one which I do know of is to place some glue
between your index finger and thumb. Faucet your finger and thumb
repeatedly to see if the glue turns cheesy and produces lengthy
stringy strands. If it does, then your glue is nice.
I’ve carried out this take a look at with glue throughout woodworking courses all
over the world, and I as soon as had the glue fail the finger-tapping
take a look at. And we didn’t have every other glue out there on the
college. As an alternative of freaking out (externally) I made a take a look at
joint with the “unhealthy” glue to double-check my outcomes. The “unhealthy”
glue arrange good and laborious prefer it was alleged to.
Since that class about 5 years in the past, I’ve been suspect of the
finger-tapping take a look at and have needed a extra dependable barometer.
The glue scientists at Franklin
International gave me two exams – one sluggish and one quick.
Each work brilliantly. I’ll share the sluggish one right here. The quick
one, which takes about 15 minutes at most – shall be in an
upcoming problem of Well-liked Woodworking Journal (once more,
apologies for desirous to eat).
Right here’s the “sluggish” take a look at: Take three blocks of wooden that every
measure three/four” x three/four” x 2”. Glue them collectively in a staggered
trend as proven within the picture above. Clamp them usually and
let the glue sit in a single day. The subsequent day, hit the middle block
with a hammer (or squeeze the meeting in a vise) till the
If the wooden fails, the glue is nice. If the glue fails, the
glue is unhealthy.
The above take a look at was carried out with liquid disguise glue that was one yr
previous its expiration date. If you wish to examine tips on how to
prolong the shelf lifetime of your liquid disguise, go
— Christopher Schwarz