carbon twill

9 years ago
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pepe47
pepe47
WA
1382 posts
WA, 1382 posts
6 Aug 2016 3:49pm
I'm thinking of doing some laminating with twill, but it seems to fray very easily around the edges. Has anyone heard of using hairspray to hold the twill in position while it's cut and laid in position for wetting out?
I've been using 93gsm for a fairly decent finish on some fins, but the carbon supplier has bought some cheap crap which doesn't laminate well at all and I'm unable to find 93 anywhere.
decrepit
decrepit
WA
12872 posts
WA, 12872 posts
6 Aug 2016 6:01pm
Hey, Pepe, I've used masking tape, you just stick it on outside the required area and cut through the middle of it. BUT you have to make sure you don't stretch the tape while sticking it on, or it distorts the cloth. If you're doing compound curves you also need to unstick the tape, (so that the cloth can conform to the shape,) but that is fairly easy once wet out, the epoxy seems to release the adhesive.
pepe47
pepe47
WA
1382 posts
WA, 1382 posts
6 Aug 2016 6:32pm
Sounds good Decrep. Do you use a rotary cutter, like an olfa or similar?
decrepit
decrepit
WA
12872 posts
WA, 12872 posts
6 Aug 2016 6:45pm
no mate just scissors,
Mark _australia
Mark _australia
WA
23647 posts
WA, 23647 posts
6 Aug 2016 10:37pm
But are you talking about for making a fin so you want the edge to be perfect...?
In that case the tape will still pull
hoop
hoop
1979 posts
1979 posts
7 Aug 2016 11:55am
I've seen guys using a 3M spray contact to hold things in place while laminating. It works quite well. I wouldn't use hairspray. I would think it has wax in it
pepe47
pepe47
WA
1382 posts
WA, 1382 posts
7 Aug 2016 12:58pm
Thanks Hoop, that might be the answer. I use a rotary cutter around a template, one of 4 differing sizes, but the exterior is the problem child, the first layup. cheers
Mark _australia
Mark _australia
WA
23647 posts
WA, 23647 posts
11 Aug 2016 4:42pm
hoop said..
I've seen guys using a 3M spray contact to hold things in place while laminating. It works quite well. I wouldn't use hairspray. I would think it has wax in it


or bog on joints and 200 staples?
pepe47
pepe47
WA
1382 posts
WA, 1382 posts
26 Aug 2016 7:46pm




Thanks for the tip Hoop, I guess it'll get better with a bit of practice. This is a 35 dtt weedie for my 124 futura. 43 degrees for a bit of lift. (and a fraction less shedding ability). Always a trade off....
decrepit
decrepit
WA
12872 posts
WA, 12872 posts
26 Aug 2016 8:39pm
Another masterpiece Paul!!! Great work mate.
Windxtasy
Windxtasy
WA
4019 posts
WA, 4019 posts
26 Aug 2016 9:09pm
ditto.
A work of art, as always.
Mark _australia
Mark _australia
WA
23647 posts
WA, 23647 posts
26 Aug 2016 10:36pm
wow!!!
Sin
Sin
WA
170 posts
Sin Sin
WA, 170 posts
27 Aug 2016 5:45am
Nice work pepe!

Although I can't answer based on personal experience, I have a supplier specialised in bespoke composites and he also uses super-glue (cyanoacrylate type) to retain the twill in position, particularly in intricate geometries of the tool when using the vacuum bag.
Bertie
Bertie
NSW
1351 posts
NSW, 1351 posts
27 Aug 2016 10:28am
3M Super 77 spray glue is the go. lightly dust the area you want to keep together. let it dry, then cut it out. You will loose all drapability if u spray though.

it aint cheap though. mine cost like $30 for a can. it is designed to be able to be used on EPS without melting it. It also wont mess with the resin.
pepe47
pepe47
WA
1382 posts
WA, 1382 posts
27 Aug 2016 9:04am
Thanks for that. I got a bit lazy while I was in bunnings and thought I'll just grab this cheap contact cement (spray can), which is still tacky a week later stuck to a nice piece of twill...bugger. I'll order the 77 on-line I think, cheers
keef
keef
NSW
2016 posts
NSW, 2016 posts
27 Aug 2016 5:10pm
great looking fin pepe is it from a mold ? I've been using hairspray and it works fine on carbon as long as you only use it on one side but not so good on glass ,also been using a fabric cutting wheel to cut the fabric
pepe47
pepe47
WA
1382 posts
WA, 1382 posts
27 Aug 2016 4:44pm
Yes it is Keef, I posted pictures of the mould in "meguiars mold release wax" back in 2014. I use an "Olfa" rotary cutter, does the job well.
keef
keef
NSW
2016 posts
NSW, 2016 posts
27 Aug 2016 7:10pm
pepe47 said..
Yes it is Keef, I posted pictures of the mould in "meguiars mold release wax" back in 2014. I use an "Olfa" rotary cutter, does the job well.



I remember the post but cant remember if the mold had a spillage well ? have you thought of blocking the mold off and doing some smaller versions as it's a great lookijg fin
I got hold of a c3 sweed and made some rubber plugs , maybe its worth a thought as well as a solid glass leading edge or maybe you have tried it


www.seabreeze.com.au/Img/Photos/Windsurfing/11040837.jpg' />
pepe47
pepe47
WA
1382 posts
WA, 1382 posts
30 Aug 2016 8:08pm




Definitely not twill, but a bit of fun on my days off. Had some highlighted plain weave from carbon composites left over, basically carbon with anodised ally foil.
Windxtasy
Windxtasy
WA
4019 posts
WA, 4019 posts
2 Sep 2016 4:37pm
Oooh, I like that anodized foil. It appeals to my taste for the bright and sparkly.
decrepit
decrepit
WA
12872 posts
WA, 12872 posts
3 Sep 2016 11:01am
Windxtasy said..
Oooh, I like that anodized foil. It appeals to my taste for the bright and sparkly.


But what will it do for the crabs???? Don't want to attract them.
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