With the threads laid on a 45/45 angle, not 90/0. No backing. Does it exist somewhere in E or S?
Xglass. Non crimp stitch fiber.
Is x glass a marketing name for bias weave s cloth? Two 45 degree angle threads crossing over each look like an x? Might the stuff I am trying to found out more about if it is.
[quote="$1"]
i want some too
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LOL. You already have stuff way better.
Yes. X-glass is 6-oz, +/- 45 biaxial cloth. I have used it. The fibers are stitched together in two layers (not woven). They are oriented at 45 degree angles to the long axis – reduce torsional flex. X-glass is the lightest +/- 45 biaxial FG I could find. You will still see the stitching somewhat after laminating.
I got it from Graphite Masters, Justin was my sales rep and was very helpful.
Is there woven 45/45 bias (diagonal) weave cloth fibreglass without stitching? I have heard JPS bias weave cloth mentioned but the JPS website has next to nothing to say about anything. Hexcel mentions this stuff but its carbon. My search for more info continues.
Fiberglass clothes would be very itchy.
so true 
1 . In truth any woven fiberglass when simply laid on the board at a 45deg. angle is by the simplest definition a bias ( oriented ) woven glass…
2. True bias as Lemat’s Xglass suggestion would be like 2 unidirectional glass layers connected together with a binder material (hot melt) with un-crimped/ uni strands running @ +45/-45 as mentioned above… The strongest, stiffest* (*on the bias) , yet most cosmetically challenged. … Although some feel the stitch binder / uni combo makes it looks cool or high tech…
3. True woven bias glass woven like the Hexcel Carbon you mention above would share many of the same superior positive qualities over Number 1 above… It might cost more and be a little harder to source…
How radical do you need to go?? That’s the deciding factor you have to deal with…
It’s not really going to make a lot of difference to a foam, fibreglass, hand lay up surfboard but woven s cloth with its weft and warp threads running on 45 degree angles to each other with no third thread (stitched / non woven?) or fibreglass mat backing (non woven again?) sounds tasty to me. Mostly for further reasons unknown.
However to take a 0 / 90 degree woven cloth and lay it on a true 45 degree angle on something the width of a surfboard would normally require very wide cloth. Unless the warp and weft threads are woven on a 45 degree angle onto the roll.
Stitch glass is use in boat buiding because it’s a rule for board buiding to add mat betwenn two layers of woven or stitch glass because of separation in thick glass laminate… But most of stitch glass don’t have mat backing (in Europe).
I read Bourton link, interesting but not completly correct… Everything has been already discussed here with correct mechanical argument.
Fiber in keahana system is 5oz woven bias fiber. Keahana 3axe tech is same idea than Bourton’s one. It’s a good way to give a better part to stringer. But may be stringer system aren’t the most effective…
Sorry for my frenglish.
If you’re building 6’ and under boards as I do, it’s simple and not really that hard… For example 50 " wide cloth cut to a lenght of 76" would cover a 5’-10" short board no problem corner to corner but the angle would only be about 34 deg. or 56deg. depending how you look at it…
Now buy 60" wide cloth and that angle becomes a lot closer to 45 deg…
Finally… You slightly stretch it like Huie suggests above and your there…
No need for fancy cloth in my opinion… E glass will do this stunt just fine…
And as Huie also mentioned … It’s been discussed loads and is not new…
Oh Yeah… And it doesn’t really have to be at exactly 45 deg. anyway… It’s the thought that counts…
hey ya kite
when you do it with 2 layers it becomes dble diagonal and does not need to be at 45 deg its the crossing of the diagonals
that reinforce the laminate been doing it for so long cant rember
to many people trying to overbuild these suckers?
the best fibre is wood beyond doubt
**cheers huie
**
Bias might be stronger for some applications, especially in multiple layers, but part of a boards strength is the lengthways strands. I've never seen a board broken laterally (is that the right word?)
A single 45/45 will be more flexible than 0-90 too, particularly a single layer on the bottom
As Huie said, it was done many years ago, many doing it to try and squeeze some extra length out of a roll of cloth. Problem is if it's not done accurately it can go bad.....I saw a few warped and twisted boards after being glassed this way.... doesn't save anything in the end.
I think so, too. I only lay up double decks at angles. The bottom I keep straight. It seems to help.
Torsional flex is about twisting along the long axis of the board.
[quote=“$1”]
hey ya kite
when you do it with 2 layers it becomes dble diagonal and does not need to be at 45 deg its the crossing of the diagonals
that reinforce the laminate been doing it for so long cant rember
to many people trying to overbuild these suckers?
the best fibre is wood beyond doubt
[quote]
…
cheers huie
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**Hey Huie. Happy New year…
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**I know what you’re saying about double diagonal lay up’s
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My kite surfboards hold up best when I lay one 3oz. crowfoot weave at as close to 45deg… Then lay one layer of the same at 0/90 then cap the board in another layer of 3oz. at the opposing 45 deg. …
**Total deck glass lam is about 11oz. total, just slightly higher than a 6oz + 4oz. deck…but more flexible and way stronger… My boards are 6’ and under so the 3 layers of glass are no big deal… (Laminates are vacuum bagged to reduce weight and tighten lam.).
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**Sorry…lol… I don’t know why I’m preaching this through you … I’m very, very sure you know all about this shit…
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