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Author: Subject: Yet another fibreglass question
RazMan

posted on 10/3/06 at 11:38 PM Reply With Quote
Yet another fibreglass question

I have now got my door skins for my middy - inner and outer. When they are bonded together they will make a very rigid (but light) gull wing door. The question is, what should I use to bond the two together?
PU Adhesive or resin? The PU might give a slightly flexible bond which is less prone to cracks (they will inevitably get slammed occasionally) but the resin option might be stronger.
Waddya think?





Cheers,
Raz

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owelly

posted on 10/3/06 at 11:58 PM Reply With Quote
I would tend to think that a bit of flex would help! The resin is brittle so a bit of Sikoflex type stuff would be best.





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Triton

posted on 11/3/06 at 12:25 AM Reply With Quote
Bonding paste





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scotty g

posted on 11/3/06 at 07:38 AM Reply With Quote
Agree with Triton, bonding paste, available from from any GRP supplier is the best thing. Its like a thick grey resin, you mix in the catalyst the same as resin and dollop it on with an old butter knife (thats what i use anyway), then clamp the two parts together. Curing time depends on how much catalyst you use just like the resin. Cheers.
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RazMan

posted on 11/3/06 at 10:10 AM Reply With Quote
Aha - I haven't come across this paste before. It sounds like it is designed for the job.
I will toddle off to my supplier next week and see what he's got.

Cheers
Raz






Cheers,
Raz

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emsfactory

posted on 11/3/06 at 10:59 AM Reply With Quote
Yep. Agree with them above.
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RazMan

posted on 13/3/06 at 05:23 PM Reply With Quote
I went to my usual supplier for resin & paints (well mainly paints) and when I asked for bonding paste I just got a blank look!
Has anyone got a link or a trade name I can look for?





Cheers,
Raz

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Hugh Paterson

posted on 14/3/06 at 07:52 AM Reply With Quote
Bonding paste is resin thickend to a "peanut butter consistancy" by the addition of a glue powder, in other words ya can make it yerself! the alternative is to give CFS a bell. A search on yahoo or google will find their contact details they do mail order.
Shug.

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RazMan

posted on 14/3/06 at 08:46 AM Reply With Quote
Thanks for the info - I found CFS here but they dont list bonding paste or glue powder I'll give them a ring later and see what they recommend.

So is the bonding paste just a resin / filler mix? If so can I just thin some P40 down with resin and then add my normal catalyst?

*edit* I phoned them and they do a product called Gravacol which is not on their website. It is a two pack bonding paste which cures to a slightly flexible finish - sounds ideal

[Edited on 14-3-06 by RazMan]





Cheers,
Raz

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Triton

posted on 14/3/06 at 10:04 AM Reply With Quote
Raz,
Ring CFS and ask for Alex....good bloke who knows his stuff.

Cheers
Mark





My Daughter has taken over production of the damn fine Triton race seats and her contact email is emmatrs@live.co.uk.

www.tritonraceseats.com

www.hairyhedgehog.com

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RazMan

posted on 14/3/06 at 10:51 AM Reply With Quote
Thanks Mark, I found a stockist quite near to me in Canvey Island (30 mins away) As the postage charge for this type of stuff is exhorbitant I will nip down there and get it.






Cheers,
Raz

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Dutchman

posted on 14/3/06 at 11:06 AM Reply With Quote
i would do it with epoxy glue strong stuf I glued my fiberglas evo 6 scoop on my bonnet still is on the hood





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RazMan

posted on 14/3/06 at 11:03 PM Reply With Quote
Got some bonding paste now - £15 for a 2.5Kg tin including catalyst ..... bargain!





Cheers,
Raz

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Triton

posted on 14/3/06 at 11:07 PM Reply With Quote
Have fun with it....can be very messy unless it's just the way I use it....





My Daughter has taken over production of the damn fine Triton race seats and her contact email is emmatrs@live.co.uk.

www.tritonraceseats.com

www.hairyhedgehog.com

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RazMan

posted on 14/3/06 at 11:13 PM Reply With Quote
I was thinking about nicking the wife's cake piping bag and putting a bead 10mm thick around the areas to be bonded, clamping them up with Cleco pins and letting the whole lot go off overnight.





Cheers,
Raz

When thinking outside the box doesn't work any more, it's time to build a new box

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