Post by Sheldon Post by email@example.com Post by Pylls, Barry Post by Sheldon Post by zxcvbob
Gorilla Glue(tm) expands when it dries. That might not be good here.
The expansion factor during curing is a great thing, fills all the
voids. With Gorilla Glue one must get used to the fact that less is
more, is all. When joints are properly clamped, as they should be
with all glues, there will be no excessive gapping. And any glue that
does squeeze out is easily trimmed/sanded. Doesn't take more than 2-3
uses to realize how skimpily to apply Gorilla Glue. To date nothing
I've used it to glue has come apart. Gorilla Glue is great stuff... no
measuring/mixing either. The very first thing I repaired with Gorilla
Glue were my eyeglasses, one teensy dab paid for my little bottle of
Gorilla Glue 40 times over... and this was three years ago, glasses are
still fine, in fact I'm wearing them now, I wear them 24/7, even sleep
in them. Since I got my Gorilla Glue I've used no other, my pint of
Elsie white stuff is all but abandoned.
Regarding Gorilla Glue, I've found that qualifying adhesives for food
contact is important (maybe not so much for my situation, since it's
only at the bottom of the cup, but for more intimate "exposure").
Food-grade epoxy, not standard hardware store epoxy or boat-builder
epoxy (won't stand up to heat). It's just normal epoxy that's gone
through some FDA tests. I think Copper-Bond is something like this.
Silicone ("RTV") withstands high temperature and is food-safe.
Apparently, even silicone comes in gradings, one being food-grade.
Mention is also made of food-safe polyurethane, but I'm not sure
if it is in the context of adhesives.
OK, enough googling. Time to visit the hardware store to check out
food-grade epoxies or silicone. Thanks, all!
P.S. I found that the cup doesn't actually vacuum between exterior &
interior walls. It is filled with a foamy substance. The holes for
injecting this are big gaping holes at the bottom of the cup, covered
by the rubber bottom (no longer). So water has entered the interior,
and will probably be there to stay, considering the foamy insulation
and all. Oh well. Not the end of the world, but it just goes to show
that vacuum insulated cups are probably not to be gotten except in
specialty cups that explicitly advertise this -- not cups that look
like what use to be vacuum cups in the past. That is, stainless
steel construction, which these days are no guarantee of vacuum-ness.
have you tried calling the manufacturer?
if you're doing all this research, might as well go to the source.
maybe they will be interested and repair your product for free.
[i've seen local hardware stores sell food-grade products.]
Just realized I have a collection of those SS "Thermocafe" bottles, by
Thermos, in various confiurations. Mine all have company logos silk
screened on them, were freebie promotional items. Why not simply buy a
Warning: Evangelism follows.
True enough. Even if it were free, though, I'm not much of a fan of
discarding something if it can be fixed. The research was for info that
I consider important in general, not necessarily for this particular
About cups, this one took a very long time to find. No weird plastic
outer shells so that you can slide pictures around the cup (I mean, I
want to drink coffee, not watch a movie). The body actually fits my
car cup holder. The lid pushes in, doesn't screw in (good), so you
can position the opening anywhere along the rim, and change that
position whenever you want (no pooring of hot water on the handle to
reposition it). The lid doesn't fit loosy-goosy (thus popping out
when least desired, and spilling scalding beverage on your bodily
parts), the rim is nice and thin-walled rather than half a centimeter
wide so that you can actually sip fluid into your mouth, it has a
slidable cover on the lid that doesn't go loosy-goosy in a week (thus
constantly falling back into a close position), the cover is not some
new-fangled mechano-gizmo thing, so it's not a exercise in contortions
to clean. The sad thing is that the original cups were excellent, did
the job in a fine way, and most of the newer variations are poorly
thought out, poorly designed, and poorly constructed. We need to get
back to the basics. A simple cup, but well made. NOTHING CUTE OR
The one I have is not one of the more costly ones, but the costly ones
tended to be not so good. The scent of the hot plastic lid would
overwhelm the coffee even after weeks of use, or somehow water would
get between the inner & outer wall quite early on so that you could
hear it sloshing around. If water is getting in, it's also going to
get out. Depending on where the breach is, you could be drinking
stale dishwater with your coffee e.g. if there were small cracks along
the seam around the rim. Yum. And water isn't the greatest
insulation material be go between the inner and outer walls. Needless
to say, the vacuum in there was long gone.
The presence of foam-ish insulation rather than vacuum is not
necessarily a bad thing, aside from the fact that water has gotten in.
It's a feature I can live without. The idea is that vacuum doesn't
offer any way for heat to conduct from inner to outer walls, except by
way of the rim -- the long way round, which makes it hard for heat to
escape. However, the hot inner wall is emitting infrared (IR), which
is shining onto the outer wall. So the energy (heat) is in fact
escaping. If you fill the space up with insulation, the IR shines on
the insulation and gets turned into heat immediately at the interface
between inner wall and insulation. Assuming that it doesn't conduct
toward the outer wall very well, it simply passes the heat back to the
inner wall. Basically, it blocks the IR and prevents heat from
escaping from the inner wall.
Since my current cup was settled on after a lengthy search, I'm not
too keen on embarking on another search and series of trials --
especially over the web, where you can't see, and touch the product to
see how well it might be designed.
Despite my rant, however, I do appreciate the time you've taken to
look for the alternative you've suggested. And I hope I haven't
discouraged you from responding to my postings in the future!