I base it on the temperature. This time of year, fast is a good choice.
Allen H. Farrington
www.allenfarrington.org
On Dec 28, 2018, at 12:44 PM, David Erbas-White <derbas@xxxxxxxxxxxxxxxx>
wrote:
On 10/23/2018 3:32 PM, Onawahya Jones wrote:
Do you guys use the fast or slow cure hardener for West Systems?
David Erbas-White
I'll put another vote in for West Systems. Depending on where it goes
depends on my mixture
For external fillets I mix up west systems and colloidal silica until I have
a thick mayo consistency. I can pour and shape fillets with minimal work and
the shape is held well until it dries. I pull the masking tape off when
everything has cured a bit. After all that I feather in the joint bond with
bondo and a round file until the transition does not have any lines.
For internal bonds its west systems and chopped carbon fiber. It doesn't
take much until it mixes into a workable hairball. Lots of mixing and then
poof, either too much or just enough. I'd call them internal fillets, but
mine are more of an adhesive wall than a fillet.
For general bonding (ebay coupler and vent band) I use west systems without
any additives
For motor retainer bonding I tend to use JB Weld. Although I assume any high
temp epoxy would be sufficient.
The above worked well for my L3 attempt.If it helps at all my build log can
be found here:
https://www.rocketryforum.com/threads/l3-build-log-wildman-interceptor-a-a-d-98.140941/
On Tue, Oct 23, 2018 at 3:19 PM Mike Ostby <mikeostby@xxxxxxxxx> wrote:
I love Aeropoxy. Available from Aircraft Spruce in Corona.
On Tue, Oct 23, 2018, 2:54 PM Jim Wold <bb.wolf2@xxxxxxxxxxx> wrote:
What type of epoxy are you using for your fiberglass rockets, West Marine,
Rocketpoxy, Pro Line of something else?
Jim Wold
