Fiberglassing a large plastic egg? - Northern Colorado Rocketry

This topic has 8 replies, 4 voices, and was last updated 14 years, 6 months ago by djsroc.

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April 3, 2011 at 12:17 am #41229
djsroc
Keymaster
Ok I got this huge plastic egg for a buck and it just screams nosecone.
I want to use it to lay fiberglass down on it. Its made of some kind of plastic that feels like nylon.

https://picasaweb.google.com/djsroc/RecentlyUpdated?authkey=Gv1sRgCLGa0cW55p-hBw#

What I want to know is what would I need to put on the egg to keep the fiberglass from sticking to it. I do want to keep the egg for future projects.

Thanks
April 3, 2011 at 1:01 am #54079
Warren B. Musselman
Moderator
Almost looks like a LEGG’s egg… but bigger.

Guaranteed to work, vaseline.
April 3, 2011 at 2:50 am #54080
Doug Gerrard
Participant
I wouldn’t trust my nest egg to Vaseline. I would splurge the $17 and buy some High Temperature Partall. Even the low temp stuff is only $13. I’ve been using the same tin for nearly a decade and still have plenty for my projects for the next decade.

http://www.cstsales.com/mold_release.html

Doug
April 3, 2011 at 3:07 am #54081
Warren B. Musselman
Moderator
OK… well if you have the right tool for the job.

Hope we have a Mile High Mayhem for you to come to Doug. Fire ban in April ain’t a good sign.
April 3, 2011 at 4:04 am #54082
Doug Gerrard
Participant
By the way, I use the PartAll for all kinds of things. Even when I’m gluing in a t-nut to the inside of an airframe, I add this to the screw that holds in in place just in case some epoxy gets on the threads. I have also used it for coating the molds for pouring expanding foam nose cones and it released just fine. If you every worked with expanding foam, its about the stickiest stuff ever. PartAll is the best stuff I’ve seen to use when you don’t want any glue to stick to something.

Doug
April 3, 2011 at 2:21 pm #54083
Warren B. Musselman
Moderator
I’m going to have to pick some Partall up. I typically fill t-nut threads with vaseline.
April 3, 2011 at 4:36 pm #54084
djsroc
Keymaster
Ill give PartAll a try. This wont be something ill be doing too soon, got way too many projects ahead of it. Thanks all for the ideas.
This will be my first scratch built nosecone.
April 4, 2011 at 10:03 pm #54085
bryans
Doug, how much does that thing weigh? Even if its light, you better get it x-rayed or something. We’d all hate to discover that you had been eaten alive by a hungry alien hatchling!
April 5, 2011 at 11:45 pm #54086
djsroc
Keymaster
It is super light, havent weighed it yet. Has to be under a 1/2 pound.
If you shake it though something inside growls a bit 😀
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