How does Inegra compare?
A hand layup of 2 oz Inegra.
Weight?
Impact strength?
Thanks
I just bought a short roll of it
gdaddy said it was not light…
Cutting my blank today and I’m
Keen to get a bit more understanding of the stuff.
Inegra is a stretchy low density fiber make to be use with stiff fiber to bulck composit skin. With appropriate resin can improve toughness without to much stiffness réduction.
perfect, thanks
How is that 2oz Innegra in terms of drapeability? Is it pretty flimsy so that it can wrap the rails easilty or does it seem kinda stiff?
doesn’t feel stiff in it’s fabric form (it does feel thicker then fiberglass fabric).
More?
I’m myphed of why Innegra is any good. It is very low strength relative to the other common fabrics? It has 10% elongation, way more than any of the common fabrics and way more elongation than our commonly used resins. A mismatch with fabrics and resins? Seems like S glass would deliver the increased elongation equated with “touphness” and with much, much higher strength and compliment existing fabric and resin elongations. Doing some homework on factory boards, I see Boardworks uses Innegra, I think i saw other mainstream companies using it also. What do i know? not nearly enouph, but i’m still myphed of what engineers see in Innegra. If you’ve got it figured out, please enlighten, thanks.
Main advantage of inegra is low density so effective bulker easy to use. When main fiber crack it keep part in one piece good thing with carbon. In some case it can help to increase overall élongation to break by energy dispersing.
Hi Yorky, I got some free Innegra from an AU supplier and it’s kinda rigid like CF but sadly it stays translucent when resin-ed. it’s polypropylene and I found other PP materials do a similar job, but I’m doing stuff like fins, foils and handplanes, not lamming boards.
It’s a speciality product and great for what I do.
ta,
Do you think it can be cut with a hot knife and to some degree, **seal **the cut line against fraying?
The Innegra I have from BGF does not fray. Some Innegra/carbon warp I got from Solar Composites frayed like mad. White hairs were everywhere. It feels like my BGF Innegra was treated with something that reduces the drape and stops all fraying.
As far as what it does…looking at stats will confuse you, have to test it to understand it.
My redneck test. The green is 2 layers 4oz S. The white is one layer 4oz Innegra, one layer 4oz S
Innegra Puncture Test from fishersfort on Vimeo.
.
Vid says green is Innegra, your comment says white is Innegra? Is green Innegra?
The video says green is Innegra. Waiting for him to clarify which is which.
Thanks for the video. Differance is pretty obvious. Alot of shapers up in my neck of the woods are specking a layer of four ounce S on the deck. Not as cosmetic as inegra and carbon but obviously strong enough for “deck dents”
McDing, what is that white cross hatch?
all the best
I don’t cut my hand but innegra is green, it’s typically what innegra inside, against foam, is good fort: puncture résistance. To compare it should be good to have weight, specific stiffness and buckling strengh.
My 2 cents. Innegra, as Lemat says is “tough” meaning it dents and doesnt crack or tear. Used between two layers of fiberglass it is a bulker adding thickness to the stack. Increased thickness makes a stronger board. It doesn’t drape well at all. I wouldnt vac bag it because you compress it thinner and you want it thick. Instead use a wet out table to minimize resin, then roll it out on the board and allow to set. Then the top outer layer of fiberglass. Bag that top layer if you want. Lots of additional steps to optimal use.
Others here have shown through experiments that innegra veil will dramatically increase attachment of the lamination to the foam when used up against the foam compared to just fiberglass. This helps prevent delaminations.
If you cover it with 2 oz fiberglass, you better be an expert sander because if you burn through, you will open up a fuzzy mess. Use super glue on a gloved finger to pat it all down. And do not pick your nose before disposing of the glove. Keep it away from the genital area too.
Upon further reflection. I could see a lam method where you wet out on a table the full lam stack of fiberglass, innegra, fiberglass, then roll it up on a tube and roll it out on your board. Then trim it while wet, lifting the outer layer of glass to get to the innegra to trim that properly (lots of relief cuts), then wrapping the rails. You would need to use RR extra slow setting resin and have some form of alcohol ready to drink when it is done. Because you are going to be a wreck. Do-able, but …
And thanks Lemat. You always get it right.
all the best
I edited my post because I’m a little unsure of myself on various names for various fabrics. This could be what’s called Technora?? I am only going by info imparted to me from suppliers like Rev-Chem and Graphite Master. I think there was some info about these various materials discussed in the Hotseat interview with Grapite Master rep-- Chris Russel.
To clarify and answer Mr. Tate’s question as to what the fabrici is on the board in my pic above; the fabric is Innegra XPI-223+/-22. Vector Net. If it is white and does not go clear at saturation(stays white); It is Innegra. There are various weaves of Innegra… Black Vector Net 226 & 227 is not Carbon. Hopefully Chris wil jump in on this thread later and clarify. Lowel