Epoxy Part IV

Epoxy Techniques

Mixing

Mixing begins with dispensing. Most epoxy makers provide pump systems that disgorge the correct amount of epoxy. Although both pumps are used, they are calibrated differently so the correct amount of resin and hardener is dispensed.

Dispense the materials into a plastic, metal or non wax paper container.

You then need to mix the ingredients for at least a minute. The cooler
the temperature the longer the mixing period.

Ensure that your mixing stick moves beyond the main part of the epoxy.
Scrape the stick along the sides and bottoms of the container to esnure
a thorough mixing.

Wetting Out

This is the epoxy user’s term for covering your working surface with epoxy.
When you wet out you use only epoxy/resin, no fillers etc.

You can begin wetting out by using a foam roller. Then even out the coverage
with a plastic spreader. You can use a disposable brush for smaller/harder
to reach areas.

Bonding
This is a two step process of which wetting out is the 1st part. Once you
have completed wetting out you can then begin adding fillers. The filler
should make the mixture thick enough to fill the gap. By having a thicker
epoxy you ensure that epoxy is in contact with all surfaces.

Once this is done move onto clamping. Moderately clamp the surfaces together
so a small amount of epoxy is squeezed out. Too much pressure and you
remove nescessary epoxy. Then remove any excess epoxy and wait for
the chemical cure to occur.

Note: If you you are new to epoxy it’s a good idea to use epoxy on a test area before completinga full scale project. This will allow you to learn without the consequences of a full scale repair job.

Next month’s theme articles will cover haul out.

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