Suitability of Araldite for repairs.

> 10 years ago
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Richiefish
Richiefish
QLD
5612 posts
QLD, 5612 posts
4 Jan 2008 1:37pm
some call it "rear cleavage" ...
Mark _australia
Mark _australia
WA
23652 posts
WA, 23652 posts
4 Jan 2008 6:51pm
stribo said...

Mark if i post a photo of MY crack can you still give me advise?


Having seen you change into your wettie, I'd say a LOT of Q-cell and resin.
arancini
arancini
WA
373 posts
WA, 373 posts
4 Jan 2008 7:03pm
just wack a bit of duct tape over it!
knot board
knot board
QLD
1241 posts
QLD, 1241 posts
10 Jan 2008 9:52am
Whatever you use to repair your board don't use the Polyester Resin commonly found in car rust repair kits. I mixed up a nice batch of this stuff with q-cell and almost melted the nose off my board

Mr. No-one
Mr. No-one
WA
921 posts
WA, 921 posts
10 Jan 2008 9:10pm
I've seen better nose repairs on Wacko Jacko. If your trying to make a hollow board petrols much easier.
Mark _australia
Mark _australia
WA
23652 posts
WA, 23652 posts
10 Jan 2008 10:00pm
Thus my previous reply: frustration that when somebody posts here saying "I've heard lots of differing opinions, what is the correct way to repair it?" and still we get the bvullsh!t responses about how any epoxy will do, silastic sealant is fine if it has Marine written on it, my mate reckons, the Bunnings guy who used to have a mate who used to surf a bit told me.... and so on.... [}:)]

Maybe Laurie can post a Sticky in the forums.... half a page about how to repair an epoxy foam sandwich sailboard.... and all the question threads get deleted before the 'experts' get to do their damage.

Oh cr^p I said I would leave this thread alone.....
nebbian
nebbian
WA
6277 posts
WA, 6277 posts
10 Jan 2008 10:27pm
A picture is worth a thousand words... next time someone asks if bog is OK then just show them that picture. Thanks for that Mr. Board!
Gestalt
Gestalt
QLD
14956 posts
QLD, 14956 posts
11 Jan 2008 12:44am
Mark _australia said...

Thus my previous reply: frustration that when somebody posts here saying "I've heard lots of differing opinions, what is the correct way to repair it?" and still we get the bvullsh!t responses about how any epoxy will do, silastic sealant is fine if it has Marine written on it, my mate reckons, the Bunnings guy who used to have a mate who used to surf a bit told me.... and so on.... [}:)]

Maybe Laurie can post a Sticky in the forums.... half a page about how to repair an epoxy foam sandwich sailboard.... and all the question threads get deleted before the 'experts' get to do their damage.

Oh cr^p I said I would leave this thread alone.....


yes and the key word here being EPOXY!!!!!!!!

to be honest. take it to an expert to get it fixed. ie. someone that build custom boards and works with all of these products every day.
JayBee
JayBee
NSW
714 posts
NSW, 714 posts
11 Jan 2008 10:49am
I am surprised that no-one has mentioned the BoardLady yet. There is a huge amount of information here regarding board repairs (including warnings about using polyester resin on foam cores :-) )

boardlady.com/

I think the answer to the first question about Araldite is - if you need a quick and dirty repair to get you back onto the water, go for it. But you will need to repair it properly before long.

JB
Harrow
Harrow
NSW
4521 posts
NSW, 4521 posts
11 Jan 2008 12:31pm
OMG, this thread has really gotten out of hand. (I know I was wasting my time asking for only informed replies) LOL!!

The fact is, this is a VERY minor hairline crack about 1cm long across the nose, that is obviously due to an impact from the mast.

Although I cannot be 100% sure, I am willing to bank on the fact that there is no damage beyond what can be seen on the outermost layer. (I have the left the board in the sun, with the bung sealed, and there is not the slightest hint of moisture being forced out the crack.)

It is so minor that I guess 9 out of 10 guys would not even bother giving a thought to repairing it. But being the analy retentive character that I am....

So, suffice to say, all I wanted to know was if the tube of araldite I have sitting in my cupboard would do, or whether I should go to the shop and buy some West Systems resin.

Anyway, I think I have the answer, (consensus is that araldite is crap), but judging by the forecast, its gonna have to wait until another day...

Thanks to most for the entertainment, (and to a select few for some informed advice).

Regards,
Harrow.
nebbian
nebbian
WA
6277 posts
WA, 6277 posts
11 Jan 2008 10:55am
JayBee said...

I am surprised that no-one has mentioned the BoardLady yet. There is a huge amount of information here regarding board repairs (including warnings about using polyester resin on foam cores :-) )


I guess we assume that people that read this thread also read this one (only a couple of weeks ago)

www.seabreeze.com.au/forums/topic.asp?TOPIC_ID=33392&SearchTerms=boardlady
knot board
knot board
QLD
1241 posts
QLD, 1241 posts
11 Jan 2008 12:14pm
nebbian said...

A picture is worth a thousand words... next time someone asks if bog is OK then just show them that picture. Thanks for that Mr. Board!


No worries Nebs, I figured that if someone else can learn from my pain it would be worth it.

I'm off the chandlery today to find some expanding Marine Urethane Foam to fill the hole.
Leech
Leech
WA
1933 posts
WA, 1933 posts
11 Jan 2008 11:21am
Mark _australia said...


Maybe Laurie can post a Sticky in the forums.... half a page about how to repair an epoxy foam sandwich sailboard.... and all the question threads get deleted before the 'experts' get to do their damage.



The answer would be for one of our experts to write an article for the Articles Section
www.seabreeze.com.au/Members/Content/Articles/All/Summary.aspx
knot board
knot board
QLD
1241 posts
QLD, 1241 posts
11 Jan 2008 4:39pm
Gestalt said...

take it to an expert to get it fixed. ie. someone that build custom boards and works with all of these products every day.


That's a bit of a defeatist attitude there old mate. So I stuffed up once, I will learn and move on.

I plan to be windsurfing for long into the future and over time I'm sure to be far happier repairing my own boards than paying someone else to do it.

I have actually been to the chandlery earlier today to purchase the correct products and received knowledgeable instructions, so my second attempt at repair is bound to be better than my first.

Pretty soon, you'll be sending your damaged boards for repair. I'll take your money if you really feel the need to pay someone else to work on your boards

555
555
892 posts
555 555
892 posts
11 Jan 2008 5:39pm
knot board said...
I plan to be windsurfing for long into the future and over time I'm sure to be far happier repairing my own boards than paying someone else to do it.


Amen to that!

Did they have the proper Urethane foam stuff? I've been trying to locate some here but so far unsuccessfully. If you have a brand name or something, that might help?

decrepit
decrepit
WA
12873 posts
WA, 12873 posts
11 Jan 2008 10:05pm
Are you guys sure urethane is OK????
I'd only be game to try it on a test sample.

I'm fairly sure urethane spray paint melts it, but that could just be the thinner in it..
greenleader
greenleader
QLD
5283 posts
QLD, 5283 posts
11 Jan 2008 11:37pm
2 pack polyurethane foam not only fills voids in damaged styrene core boards,
it also leaches surrounding moisture out of a damaged, wet(not too wet) core,
as it uses moisture to help the transformation process from liquid to hard foam.
waveslave
waveslave
WA
4263 posts
WA, 4263 posts
11 Jan 2008 10:46pm
knot board said...

Whatever you use to repair your board don't use the Polyester Resin commonly found in car rust repair kits. I mixed up a nice batch of this stuff with q-cell and almost melted the nose off my board




lol.
It looks a bit like neopolitan ice-cream.

knot board
knot board
QLD
1241 posts
QLD, 1241 posts
12 Jan 2008 12:39pm
555 said...

knot board said...
I plan to be windsurfing for long into the future and over time I'm sure to be far happier repairing my own boards than paying someone else to do it.


Amen to that!

Did they have the proper Urethane foam stuff? I've been trying to locate some here but so far unsuccessfully. If you have a brand name or something, that might help?



Sorry mate, I didn't think to look for a brand name. The stuff comes in bulk 20L drums and is normally sold by the litre. One litre of mixed polyurethane (500ml part A + 500ml Part B) expands to a volume of 26 litres!!

The guy at the chandlery has very helpful and we negotiated my me to purchase to 50ml syringes of both parts. One litre costs $20, so the syringes were more expensive than the product. Syringes $3.50 each and 100ml of Polyurethane cost $2.00, I actually used less than half of that so the repair cost me $1 in product

There is photos below of my repair job. First I cleaned the hole with compressed air, then prepared a bag to seal over the hole which forces the foam into the board as it expands. You must have everything ready to go as the foam goes off quickly. Mix two equal parts of foam (in my case 20ml of each) and pour it evenlt into the hole. The foam starts expanding in 40 seconds and reaches maximum expansion in a few minutes. The foam sets hard enough to cut and sand after 15 minutes.

Cheap, easy and fun





Susie
Susie
SA
837 posts
SA, 837 posts
12 Jan 2008 1:14pm
stribo said...

Mark if i post a photo of MY crack can you still give me advise?

Oh BEHAVE

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