By Captain J.R. Watson
The WEST SYSTEM Six10 cartridge is comprised of the
cartridge body, removable nose plug and a threaded retaining nut. A 600 static mixer is included with the cartridge. (It's called a static mixer because it has no moving
parts.) The cartridge fits into any standard caulk
gun-manual, cordless or pneumatic-and allows simultaneous dispensing and mixing of the two-part epoxy.
Manual caulking guns are graded by mechanical advantage (MA) in relation between the travel of the
pistol grip and the plunger. When using
the static mixer, resistance is increased. Low MA guns 3 to 8, which
generally cost less, are adequate to
dispense Six10 with the mixer at
temperatures over 60F. If it is cooler
than that, you might want a gun rated MA 12
to 26. Minimum application temperature is 50F.
Remove and save the retaining nut and plug to
reuse if you are storing the unused adhesive.
Be sure the plug is replaced in the original
orientation to avoid cross contamination.
Mark the plug and cartridge to avoid confusion.
Extending working time
The WEST SYSTEM 600 Static Mixer blends the resin
and hardener as it passes through the device. Often,
you'll apply some epoxy to your work surface and proceed with assembly. While you're working, adhesive in
the mixer will eventually begin to cure. You should have
about 42 minutes at 70F before you need to dispense
more epoxy. If you need more time, here is a simple
method to extend working time and prevent curing in
the mixer, as well as loss of a static mixer. Cut a 1" to
2"-diameter PVC pipe to about 6" long. Install the PVC
cap on one end of the pipe, then pass the pipe through a
hole the same size as the pipe in a square of plywood.
This will keep all upright. With the cap facing downward, place this device in a cooler with a little ice in it.
Place the cartridge with mixer attached in the tube. The
cold temperature will double or triple the working time
of the material in the mixer.
The static mixer is a great tool that blends the resin and
hardener thoroughly and automatically as it is dispensed.
When you're involved with a big gluing job you can use
successive tubes, transferring the same static mixer from
the emptied tube to the fresh one. But the mixer consumes a small percentage of the total amount of epoxy in
a tube. If you're doing a small job, it is good to know that
you don't have to use the static mixer. Simply squeeze out
what you'll need (maybe even a little less- you can always
mix a little more if short) onto a piece of poster board or
plywood and stir thoroughly. The resin and hardener are
slightly different colors; use this color difference to gauge
the thoroughness of your mix. All should be a consistent
color with no streaks.
Storing unused adhesive
The nose plug covers the two separate ports that emit
resin and hardener and prevents leakage and contamination. Remove the plug before use and replace it after-
ward. As resin is emitted from one side and hardener
from the other, the plug will get residue of resin and
hardener on it. For best results, clean the tip before replacing the plug. Try using a stir stick, paper board or
poster board with a slot cut into it. Use this to swipe
over the divider.
When you replace the plug be sure it is oriented the way
it was when it was first removed, otherwise resin and
hardener on the plug will contaminate opposite side of
the port and cure. To prevent this, before you use the
product remove the retaining nut and put one magic
marker dot on one side of the removable plug and a corresponding dot on the same side of the cartridge. When
replacing the plug, you'll always be able to orient it
Replace the plug, aligning the dots as described earlier,
then replace the threaded cap. The tube will be ready for
use next time you need it. Always replace the retaining
nut, as hydraulic pressure may force the plug out.
Store the Six10 tubes away from sunlight in a cool, dry
place. But don't refrigerate them. On a boat, store the
tubes in a plastic zip-lock bag so they stay dry. When
properly stored, Six10 will remain usable for years.
EPOXYWORKS Number 27, Fall 2008
Copyright © 2008, Gougeon Brothers, Inc. All rights reserved.
Reproduction in any form, in whole or in part, is expressly forbidden without the consent of the publisher. EPOXYWORKS, Gougeon Brothers, WEST SYSTEM, Episize, Scarffer and Microlight as used throughout this publication, are trademarks of Gougeon Brothers, Inc., Bay City, Michigan, USA.