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 <mailto: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
<mailto: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
