Forums > Windsurfing General

New vid, how to repair a windsurfing sail with x-ply

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Created by Manuel7 4 months ago, 10 Nov 2018
Manuel7
244 posts
10 Nov 2018 10:01AM
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A few steps involving prep work, holding the sail down, pre-taping, etc.
Also include long-term results after use in the waves.



And the culprit white water !
We can see the white water pushing on the board which poked through the bottom panel.
I tried the throw your gear over the wave and pray technique.



Mark _australia
WA, 18794 posts
10 Nov 2018 12:25PM
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I like it.
But much easier to cut a piece of stickyback to the right size.......?
I'd use that good tape of yours if I could not get stickyback though

HotBodMon
NSW, 279 posts
10 Nov 2018 4:59PM
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Nice tape job Manuel7.
Probably a retard question but has anyone attempted any hot air welding of any sort ?
Is it possible or is monofilm supa melt worthy ?

sailquik
VIC, 4333 posts
10 Nov 2018 8:00PM
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Thats a very good question.

Apparently Polyester film (Mylar) can be welded.

cool.conservation-us.org/coolaic/sg/bpg/annual/v21/bp21-23.pdf

Do any sail makers actually use it in sail construction though? If not, there must be a good reason. I can think if a few,,,,,,

Madge
NSW, 144 posts
11 Nov 2018 7:44AM
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Select to expand quote
sailquik said..
Thats a very good question.

Apparently Polyester film (Mylar) can be welded.

cool.conservation-us.org/coolaic/sg/bpg/annual/v21/bp21-23.pdf

Do any sail makers actually use it in sail construction though? If not, there must be a good reason. I can think if a few,,,,,,


you only need to get a few hot days or leaving the sail rigged in direct sunlight would soften the weld. It would probably last ok as a repair but you couldn't make a sail using that process, the weld is pretty heavy too and these days they try and make the batten pocket and seam together, so you'd need two small welds, one either side of the seam.

Manuel7
244 posts
7 Jan 2019 8:40PM
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Update: After numerous sessions and severe washings, repair is in same shape except that moisture got inside along the tear. I suspect it made its way in on the luff side where the crack meats stitching. However, the tape itself is still sticking the same. Not sure it's worth dabbing some silicone there (not now or when it's fully dry), it'd be nice to a have full dry repair!

Now I've had to patch a few small cracks on the sail itself which is looking a little sad :D !

windsurfing.lepicture.com/tips-and-tricks/

DunkO
NSW, 986 posts
8 Jan 2019 6:49PM
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A good quality (not bunnings) silver tape works better than any sail repair tape i've tried.

stays stuck and strong.


Imax1
VIC, 1706 posts
10 Jan 2019 7:30PM
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I use a X ply sticky back . It comes 1.2 m wide and buy it by the metre. I think its made in Germany . Once cleaned with acetone it sticks and will never peel. Ever ! I repair as the above vid .
Ive fixed full panel tears , no problem. The stuff is amazing.

jirvin4505
QLD, 981 posts
10 Jan 2019 10:50PM
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Select to expand quote
Imax1 said..
I use a X ply sticky back . It comes 1.2 m wide and buy it by the metre. I think its made in Germany . Once cleaned with acetone it sticks and will never peel. Ever ! I repair as the above vid .
Ive fixed full panel tears , no problem. The stuff is amazing.


Have you got an online link for the xply sticky back?

Imax1
VIC, 1706 posts
11 Jan 2019 7:10AM
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Select to expand quote
jirvin4505 said..


Imax1 said..
I use a X ply sticky back . It comes 1.2 m wide and buy it by the metre. I think its made in Germany . Once cleaned with acetone it sticks and will never peel. Ever ! I repair as the above vid .
Ive fixed full panel tears , no problem. The stuff is amazing.




Have you got an online link for the xply sticky back?



I think I do , at work .
It was a sail makers supply joint in NSW.
Ive also bought it from a local boat sail maker, repairer.
Ill let you know Monday or Tuesday.

MagicRide
82 posts
11 Jan 2019 7:50AM
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Tried to find the tape you were talking about. This is the closest I found. Pattern looks different, but is this the type of tape you mentioned?

Imax1
VIC, 1706 posts
14 Jan 2019 9:59AM
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Select to expand quote
Imax1 said..

jirvin4505 said..



Imax1 said..
I use a X ply sticky back . It comes 1.2 m wide and buy it by the metre. I think its made in Germany . Once cleaned with acetone it sticks and will never peel. Ever ! I repair as the above vid .
Ive fixed full panel tears , no problem. The stuff is amazing.





Have you got an online link for the xply sticky back?




I think I do , at work .
It was a sail makers supply joint in NSW.
Ive also bought it from a local boat sail maker, repairer.
Ill let you know Monday or Tuesday.


X Ply clear sticyback details .
Dimension Polyant Sailcloth.
Brookvale NSW
( 02 ) 99059565
Comes 1.4 m wide and they sell by the metre . $ 12 + GST + del.
Two kinds , XIP polyester ( black x ply )
or
XIA ( yellow X ply )
I use the black because it doesnt stand out anywhere as much as the yellow .

cammd
QLD, 2076 posts
14 Jan 2019 10:45AM
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Tape letting go is never my problem, its the new tear that happens beside the taped repair that is the problem. Once the monofilm starts getting brittle its only a matter of time before your taping it everytime you use it.



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"New vid, how to repair a windsurfing sail with x-ply" started by Manuel7