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

Thats a very good question.

Apparently Polyester film (Mylar) can be welded.

https://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,,,,,,

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/

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 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.

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 .