Have I somehow gone all these years and still missed a "workshop tip"
about how to keep silicone caulking from setting up in the cartridge
spout once it's been unleashed?
Digging the hardened plug of silicone rubber out of the tapered spout
the next time I need to use it is always a PIA.
I've tried squirting a bit out into a paper towel, wiping it off, and
quickly slamming the cap on, followed by a few wraps of plastic
electrical tape, but that doesn't seem to help.
Same for the plastic "toothpaste tubes" of the same stuff, though
they're somewhat easier to clear the clogs out of.
Jeff Wisnia (W1BSV + Brass Rat '57 EE)
"If you can smile when things are going wrong, you've thought of someone
I bought some DAP caulking in Home Depot recently and they also have a 'cap'
that fits on the end of the opened tube. It has been completely successful
Also, the cap has a kind of 'fingernail' thing on it for dressing the bead.
I usually squeeze out about an inch of silicone when I am finished, put the
cap on the tapered end, then apply the inch of silicone to the cap where it
meets the tube, not 100% but it is useable in the future.
It isn't just silicone, it's any type of calk. And the key
is to keep out oxygen and to keep in the volatiles.
You take the tube out of the gun (of course). Take a large
piece of saran or other type of plastic wrap and fold it so
you have 4 layers and cover the big end of the tube and hold
it on tight with rubber bands. Then you take another piece
of 4 layers and wrap it tight around the nozzle. When you
do this, lay the nozzle on the plastic with the top about
the middle, fold the plastic over nozzle, and wrap tightly,
then secure with rubber bands.
It took me a while to realize this too, putting the cap back
on top of the tube does nothing. I've used a tube of
regular calk multiple time over 3 years doing this, and then
finally used it up. Not sure how long the tube of silicone
has lasted, but more than one year.
Jeff Wisnia wrote:
I've had good luck with this too. I either use saran or heavier
plastic. I don't pre-fold, I wrap it around the nozzle as many
times as it'll go, making sure I have multiple layers particularly
over the tip, and then use several turns of electrical tape around
the plastic to secure it to the nozzle.
After a year or more, the caulk is usually as "fresh" as the day
I first openned the tube.
With care, the plastic wrap "cap" can be reused.
Chris Lewis, Una confibula non set est
It's not just anyone who gets a Starship Cruiser class named after them.
I grab a piece of plastic (usually a Home Depot bag lying around or you can
use Saran wrap) and cut out a chunk about the size of your palm, fold it
over 2 -3 times, then wrap it over the cut end of the spout, twist it along
the spout til theres no more slack, then secure by wrapping an elastic band
tightly around about 5-6 times. Works for me. I ve never needed to seal
the "other end" like one poster suggests.
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