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Dyneema re-enforced airex (Carve 99)

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Created by Subsonic > 9 months ago, 16 Oct 2019
Subsonic
WA, 3354 posts
16 Oct 2019 7:37PM
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I've got a carve 99 i'd like to do a nose job on, but i fear "dyneema re-enforced airex" is one of those ones that'll turn fuzzy and not play well with normal epoxy resin.
Anyone here played with it? What am i getting myself into?

Dar
215 posts
16 Oct 2019 7:49PM
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I don't think the issue has to do with resin, but more to do with how you work with the layers. From what I know with dyneema and kevlar you usually cover the reinforcement with a layer of glass which can be sanded etc whereas you cannot sand dyneema. So you should be good to go if you have a good finish of glass cloth above the dyneema and you can sand and do whatever you need without getting down to the dyneema layer.

Let the experts confirm.

forceten
1312 posts
16 Oct 2019 10:00PM
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Kevlar is a giant pita to work with. If it's covered with other layers it's ok, until you reach it sanding then it becomes frayed.
carbon and glass

decrepit
WA, 12767 posts
16 Oct 2019 10:15PM
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I haven't worked with dyneema, but with frayed kevlar, I use a very sharp blade to first shave it, then coat with a coat of spray paint that has a high shrink rate when it drys. That pulls the fibres back in, then another shave, etc until fibres don't show, then your finish coat. As mentioned it's a PITA, so a sacrificial layer of glass over the top is the best idea, just don't sand through it.

Subsonic
WA, 3354 posts
16 Oct 2019 10:27PM
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Ok, sounds promising so far. I'll be glassing it up pretty well, just a matter of trimming the fibres down beforehand.

looks like i'll have to lash out on some fresh stanley blades and give that a go. Thanks for the tips (so far)

duzzi
1120 posts
16 Oct 2019 11:31PM
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Select to expand quote
Subsonic said..
I've got a carve 99 i'd like to do a nose job on, but i fear "dyneema re-enforced airex" is one of those ones that'll turn fuzzy and not play well with normal epoxy resin.
Anyone here played with it? What am i getting myself into?


Just use S-glass in a slow weight (4 oz or 150 g/m2). It will add an insignificant amount of weight compared to dyneema and be uncomparably easier to work with.



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"Dyneema re-enforced airex (Carve 99)" started by Subsonic