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Board Repair - What do I do about this?

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Created by leftfield > 9 months ago, 6 Feb 2010
leftfield
WA, 190 posts
6 Feb 2010 9:13PM
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I have damaged the nose of my board. It's a JP FSW 2008. See picture below. I think it was originally damaged by previous owner and I have opened up an old wound by walking it into a fence post.

Now my question(s) is/are.

Do I need to do something about this?

What are my options for a diy repair?

Is it worth getting something down by a pro? and if so what would be the ball park costs? And who?

decrepit
WA, 12165 posts
6 Feb 2010 9:34PM
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Sorry it's too hard to see exactly what's happened there.
It looks like it may just be the top layer of bog/paint that's lifted off.
If that's so and the fibreglass underneath isn't damaged at all, then all it needs is a light sand and some new bog/paint.
If the fibreglass is cracked or damaged, the damage needs to be sanded out and re-glassed.

leftfield
WA, 190 posts
6 Feb 2010 9:42PM
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decrepit said...

Sorry it's too hard to see exactly what's happened there.
It looks like it may just be the top layer of bog/paint that's lifted off.
If that's so and the fibreglass underneath isn't damaged at all, then all it needs is a light sand and some new bog/paint.
If the fibreglass is cracked or damaged, the damage needs to be sanded out and re-glassed.


I took about 20 pictures but that was the best one...

To me it looks just like the paint/bog has come out. The fibreglass looks un damged to me. Is it ok to sail as is.(assuming the fibreglass isn't damaged)

Sorry I no nothing about the properties of fibre glass. ( I guess what I am asking is does the fibreglass need a coating/Sealant)

Also if i was to paint it myself is normal car paint spray ok for a small diy job?


Haircut
QLD, 6481 posts
7 Feb 2010 12:01AM
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i agree with decrepit

though i can't imagine anyone bogging a spot on their board for nothing, i'd be guessing it has probably been squashed by something at the least

if you put the bung in it, stick it in the sun for a couple of hours and see if any moisture comes out. if nothing comes out, forget the spot even exists......... and go for a sail (or bog it back up)

a bit of exposed glass up the nose gives better grip for vulcans

decrepit
WA, 12165 posts
6 Feb 2010 10:40PM
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I'd use a small blade to remove the rest of that loose stuff, it may be hiding damage.

Over time, sunlight degrades epoxy resin, it turns a yucky brown colour, that's the main structural reason for painting boards.
With any luck the fibreglass should be water tight, if there's no damage.

Even if there's no damage, if the glass has been applied with insufficient resin, it may leak a little.

To test it, I'd prefer to apply suction to the breather, rather than pressurise the board.
If it leaks you should hear a whistle, a plastic tube in your ear can help locate it.

Windxtasy
WA, 4014 posts
6 Feb 2010 11:13PM
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speaking of whistles...
after my last sail I removed the vent plug from the board and when I put the board in the car there was a very audible whistling sound coming from the vent - like a whistling kettle. I haven't noticed it before. Is this a bad sign?

Mark _australia
WA, 22423 posts
7 Feb 2010 8:46AM
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No Anita that is good!

DavMen
NSW, 1499 posts
7 Feb 2010 12:55PM
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I took about 20 pictures but that was the best one...


www.imagetree.com.au/photography.html

keef
NSW, 2016 posts
7 Feb 2010 1:08PM
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Select to expand quote
leftfield said...

What are my options for a diy repair?


you will have to get rid of all the bog with a sander or something and then on the edge of the repair you rout out a square(most boards have a fine layer of filler) im in the middle of a project at the moment and useing mainly 2" carbon tape, you will notice a gas touch and roller, when you have finished with the roller let the resin set and burn it off when you want to use it , as you can see i'm about to glass the fin box's ' just run the tape along the strait routed edge, so when you need to sand the the repair will be flush

as you see the footstrapps are still on the board





leftfield
WA, 190 posts
7 Feb 2010 10:47AM
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DavMen said...


I took about 20 pictures but that was the best one...


www.imagetree.com.au/photography.html


Smart arse

leftfield
WA, 190 posts
7 Feb 2010 10:50AM
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decrepit said...

I'd use a small blade to remove the rest of that loose stuff, it may be hiding damage.

Over time, sunlight degrades epoxy resin, it turns a yucky brown colour, that's the main structural reason for painting boards.
With any luck the fibreglass should be water tight, if there's no damage.

Even if there's no damage, if the glass has been applied with insufficient resin, it may leak a little.

To test it, I'd prefer to apply suction to the breather, rather than pressurise the board.
If it leaks you should hear a whistle, a plastic tube in your ear can help locate it.


How do I go about applying suction to the breather?

Sink plunger??
Compresser??

raggy
VIC, 564 posts
7 Feb 2010 3:25PM
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sell it to me for next to nothing mate im not fickle about cosmetic stuff hahaha you know that just look at me

Sailhack
VIC, 5000 posts
7 Feb 2010 7:15PM
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leftfield said...

I think it was originally damaged by previous owner and I have opened up an old wound by walking it into a fence post.


I'm glad that guy doesn't repair my board!

As mentioned above, I'd be stripping off the old patchup job, as it looks pretty awful & assess the situation then. That bog-job could be hiding all sorts of nasties & you'll only be covering them up again...trust me, been there/done that, but fortunately with a much older board!

hoop
1979 posts
7 Feb 2010 5:33PM
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Hi leftfield. Regarding one of the previous posts. Please don't use a router,gas torch or any carbon on this repair. If you do I'll expect to see you at our shed sometime soon.
It looks like a very basic repair. All you need to do is sand it back, 1 or 2 layers of 6oz cloth then fill and paint. If that doesn't make sense then message me and I can show you what to do if you're keen to do it your self.
I wouldn't normally reply to this but I can see some carnage happening if you start hacking into it with a router and a blow torch.

P.C_simpson
NSW, 1489 posts
7 Feb 2010 11:40PM
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I would do the same as Hoops, pretty basic repair.

One other thing though, never use car bog where there is exposed foam as it will eat it away when it cures as it heats up, then you will have a big cavity under the glass which isn't good..

Mark _australia
WA, 22423 posts
7 Feb 2010 9:53PM
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Agree with Hoops last thing that needs is a router. A sand back with 60 grade to get rid of any loose crap and see how ddep the loose crap goes, then glass with epoxy resin.

Sorry P.C have a call technicality there - it is not the heat that does it, it is the fact that polyester resin physically dissolves styro.
However heat will do it if you put a lot of epoxy in to fill a void it will melt foam due to heat as it cure.

decrepit
WA, 12165 posts
7 Feb 2010 11:02PM
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leftfield said...

How do I go about applying suction to the breather?

Sink plunger??
Compresser??



Bit awkward if you don't have a vacuum pump, but you may be able to use the intake of a compressor. The only thing is you have to limit, the amount of suction somehow, like a bleeder valve of some sort. Perhaps a small hole in the pipe. But that's going to whistle as well so it needs to be a long way from the board.

A vacuum cleaner is also possible, (especially if it's got a low suck option) but again be careful, if there's no air flow through it, a vacuum cleaner will burn out fairly quickly.


PS, I think keef was using the blow torch to clean his roller, not the board.

And I'd only use a router for removing foam not cloth or bog. You need a tapered, overlapped join on repairs. a butt joint in cloth is only going to be weak.

leftfield
WA, 190 posts
8 Feb 2010 8:44AM
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Thanks for all the replies. Fortuanatley I have no routers, blow tourches or anything of that nature to cause any carnage with so the bored is safe..


i will sand back the area to check for more damage.




neng
WA, 256 posts
8 Feb 2010 2:16PM
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This web link may help you a bit boardlady.com/index.htm
I fixed my with "Selleys Plasti Bond but that was a small crack, have a look at a shop and read the back of the package.

P.C_simpson
NSW, 1489 posts
8 Feb 2010 7:39PM
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True Mark Polyester Resin is a big destroyer of Styro, but i have also repaired a few boards where the owners have done a quick fix with car bog and it ain't pretty when you see whats underneath once you sand it...

FormulaNova
WA, 14734 posts
8 Feb 2010 5:15PM
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P.C_simpson said...

True Mark Polyester Resin is a big destroyer of Styro, but i have also repaired a few boards where the owners have done a quick fix with car bog and it ain't pretty when you see whats underneath once you sand it...


I think what Mark was suggesting was that car body filler, AKA bog, is polyester based. Check the can; it's usually written up as polyester car body filler.

It's not the heat, it's the polyester that's causing the damage.

keef
NSW, 2016 posts
8 Feb 2010 8:16PM
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hoop said...

Hi leftfield.
I wouldn't normally reply to this but I can see some carnage happening if you start hacking into it with a router and a blow torch.

leftfield forget about the blow torch and router.its a personal joke with hoop what im trying to say is no mater what you do as far as repairing a board is you cant sand the beyond the repair
what you need to do is get rid of that bog and then sand a destingtive divit , i like to use straite lines and then use a fiberglass tape around the edges ,then you can use some glass mat
, ive seen some horrible glass jobs because its hard to stop the edges from fraying, i glassed my board today and its ready for some bog you will notice there is no freying edges on the original bottom
i have allso used 3 carbon roveings on the tail i could have bogged it but its another option allso notice the foot pads are still on the board if you used strait cloth you would have to take them off

swoosh
QLD, 1927 posts
8 Feb 2010 7:59PM
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Hey dude, I had similar damage on one of my old boards. I did a repair job and put some pics up, check it out here: www.seabreeze.com.au/forums/topic.asp?TOPIC_ID=41848

I didn't document how i cleaned the initial damage up, but you should sand it back and remove any damaged material. If the foam core is significantly damaged I think you can fill it with some expanding foam?

fletchk
SA, 93 posts
8 Feb 2010 9:48PM
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No offence to whoever repaired that board but it doesnt look very good. Whatever they have done id get rid of it cause it looks like they havent done a great job. Also from the picture it looks like it may have been repaired with chopped strand mat. Which is that stuff with short random fibres that go everywhere and shouldnt be used to repair a board. If you can spare the bucks take it to a board repairer if i had to guess from the pic id say not more than 5 or 6 hours for a pro to fix. If you want to fix it yourself dont be scared its really not that hard. Dont use polyester resin on your board as not only will it eat the foam but the board should be made with epoxy resin and polyester tech speaking wont stick to epoxy. Given boards have very low loads compared to other stuff you might get away with it but its not worth spending the time to do it wrong. There is heaps of websites on how to fix it prob more about surfboards which should be similar.
Keef a good trick to getting neat edges with wet glass/carbon cloth is to lay out some masking film 3M or similar (there are proper films avail but not many people buy them) put an over size piece of glass on it and wet it out. Then cut it to size. If you want you can put film on both sides to handle it like a dry piece more or less. Put it on the job with the glass/carbon down(no film in between double check to make sure!) then peel off the plastic carefully. Thats how most neat wet layed carbon jobs are done.

keef
NSW, 2016 posts
8 Feb 2010 10:45PM
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fletchk said...

Keef a good trick to getting neat edges with wet glass/carbon cloth is to lay out some masking film 3M or similar (there are proper films avail but not many people buy them) put an over size piece of glass on it and wet it out. Then cut it to size. If you want you can put film on both sides to handle it like a dry piece more or less. Put it on the job with the glass/carbon down(no film in between double check to make sure!) then peel off the plastic carefully. Thats how most neat wet layed carbon jobs are done.
thanks for the tip fletchk i ashume your talking about the green 3M , you know i dont trust any maskining tape where its non porous, i use a film that has heeps of holes so it can breath, but i will try it when i'm doing a wet layup over divicell
thanks

fletchk
SA, 93 posts
8 Feb 2010 11:29PM
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keef said...

fletchk said...

Keef a good trick to getting neat edges with wet glass/carbon cloth is to lay out some masking film 3M or similar (there are proper films avail but not many people buy them) put an over size piece of glass on it and wet it out. Then cut it to size. If you want you can put film on both sides to handle it like a dry piece more or less. Put it on the job with the glass/carbon down(no film in between double check to make sure!) then peel off the plastic carefully. Thats how most neat wet layed carbon jobs are done.
thanks for the tip fletchk i ashume your talking about the green 3M , you know i dont trust any maskining tape where its non porous, i use a film that has heeps of holes so it can breath, but i will try it when i'm doing a wet layup over divicell
thanks

No its not masking tape but plastic for masking up a large area comes in rolls. 3m is the expensice brand others are cheap. It loos like thin shopping bag plastic on a roll. Makes sure you take it off before the laminate goes off.



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"Board Repair - What do I do about this?" started by leftfield