| |
 |
Quik-Cure™
5 min. |
| Quik-Cure 5 min cures
to a slightly flexible consistency making it ideal for joints that
may experience vibration or stress but it shouldn’t be used if the
joint will experience extended periods immersed in water. It is however
safe to use when constructing internal structures inside boats. Full
strength is reached in one hour. |
| |
BSI201 |
BSI
Quick Cure 5min Epoxy 128g (4 1/2oz) |
| BSI202 |
BSI Quick Cure 5min
Epoxy 255g (9oz) |
|
 |
Mid-Cure™
15 min.
|
| Quick-cure 15 min is the
choice when working with large areas or more complex joints. It is
the most flexible of all of the epoxies and is more moisture resistant
than Quick-Cure 5 min. It’s properties make it the optimum choice
for boding components to fibreglass surfaces, components can be handled
after 45 minutes and full strength is reached after two hours. |
| |
BSI203 |
BSI Mid Cure 15
min Epoxy 128g (4 1/2oz) |
| BSI204 |
BSI Mid Cure 15
min Expoxy 255g (9oz) |
| |
 |
Slow-Cure
30min. |
| Slow-Cure 30min. forms
the strongest bonds, is waterproof and more heat resistant than any
of the other epoxies in the range. Of course when using it for bonding
the only problem is the length of time needed to cure; for handling
there is a wait of 8 hours and full strength isn’t attained until
the 24 hour mark is reached. To best take advantage of it’s strength
use it to fillet already formed joints. It can be mixed with microbaloons
to form a putty-like consistency which is ideal for the task, although
using this technique does slow down the curing time, by around 25%. |
| |
BSI205 |
BSI Slow Cure 30
min Epoxy 128g (4 1/2oz) |
| |
BSI206 |
BSI Slow Cure 30
min Epoxy 255g (9oz) |
|
 |
Finish-Cure™
20min. |
Finish-Cure
20 min. constitutes a great low odour substitute for polyester
resins and can be used to laminate fibreglass cloth over a wooden
substrate or indeed be applied on it’s own to form a finish coat
that can accept further primer and finish coats. Finish-Cure is
the easiest of all the epoxies to sand and is ideal for the sheeting
of foam core wings.
For best results, Finish-Cure should be heated to a temperature
above 29˚C (85 ˚F) for applying lightweight fibreglass. Lay cloth
on balsa first, then brush on Finish-Cure, when fully saturated,
go over the surface with a heat gun and then squeegee off excess
epoxy with a stiff piece of card (a playing card from an old deck
does the job well). Heat and remove excess several times for a
lightweight finish. If room temperature is below 21˚C (70 ˚ F)
use a heat gun on the surface several times for the next 2 hours.
When dry lightly sand then fill surface with a low weight spakeling
compound, scrapping off excess with some card. Sand to a smooth
finish ready for primer. For heavy weight fibreglass apply the
epoxy before and after laying down the cloth.
Finish-Cure takes 8 hours to fully cure. |
|
BSI209 |
BSI Finish Cure
20Min Epoxy 128g (4 1/2oz) |
| BSI210 |
BSI Finish Cure
20Min Epoxy 368g (13oz) |
Using Epoxy adhesives |
All of the BSI epoxies
are mixed to a 50-50 ratio and any type of scrap material can be
used as a mixing pallet although flexible plastic lids as found
on some canned food products can be re-used buy ‘popping off’ excess
cured adhesive.
To ensure the correct ratio of hardener and resin squeeze out
equal lengths of each on the mixing surface before mixing well
with a small
piece of wood or stiff cardboard. If the epoxy is
cold and quite viscous it can be problematic getting out of the
bottle, removing the caps and
heating in a microwave oven for ten
seconds will thin it and make it easier to use.
For the cleaning of tools and hands before curing use acetone
or isopropyl alcohol. Epoxies should not be thinned by adding additional
substances as they may affect curing and the overall strength of
the joint, if a thinner epoxy is needed heating in a microwave
oven is the best solution.
Epoxies bond best on clean textured surfaces, smooth non-porous
surfaces should be roughened with a course abrasive to obtain maximum
adhesion. The time classification of the epoxies denotes the amount
of working time available before the epoxy begins to cure after
being
mixed in a large mass. With the exception of Quick-Cure™
working time is increased when the epoxy is spread thinly, it does
however decrease by
up to 25% when ambient temperatures exceed
32˚C (90 ˚F). |
|
