Carbon Fiber

[Idok]

ok, been doing a little lookin' around for some carbon....

ebay seems to have TONS of it....


so, what are the differences between:

carbon fiber
carbon fiber cloth
carbon fiber twill


who can give a nutshell lesson in this stuff? Crammitt????? Steve???


anyone used any off ebay and whatcha think???

 

[Idok]

i know you guys can tell me more than this....

 

[orange flattop freestyler]

Okay a cloth is tightly woven, normally 1x1.
A twill is loosely woven that normally comes in 2x2 and 4x4.

This is unidirectional cloth

This is plain weave cloth

This is a 2x2 twill (Harder to work with than cloth)

This is 4x4 carbon twill and is even harder to work with but the prettiest to look at. This is what i have in my ski.

Here you can see,(bad pic) of a 4x4 carbon twill in my ski

Hope this little lot helps :biggrin:

 

[Exile]

How expensive is a 'sheet' of carbon cloth and how do u apply or use it?????

 

[yamaslut]

thanks for that.... I've used it, but not up on the terms

 

[Idok]

nick, whats in your ski???

 

[Exile]

So its stronger...but it`s not unbrakable?? (faceplanting into a sandbank from above the surf)

Is it easier to reenforce with it than fibre glass.....

 

[Idok]

http://cgi.ebay.com/ebaymotors/Blue-Kevlar-Carbon-fiber-Fabric-Cloth-Hybrid-36-by-50_W0QQcmdZViewItemQQcategoryZ6755QQitemZ4625570106QQrdZ1

http://cgi.ebay.com/CARBON-FIBER-FABRIC-1K-3-2-oz-PLAIN-WEAVE-33-in-X-42-in_W0QQitemZ6046452294QQcategoryZ34056QQrdZ1QQcmdZViewItem

http://cgi.ebay.com/ebaymotors/CARBON-FIBER-CLOTH-2x2-TWILL-FABRIC-24-x60-10sq-ft_W0QQcmdZViewItemQQcategoryZ107070QQitemZ4626693197QQrdZ1


here's a couple of the examples ive been looking at.....anything that looks good or anything to stay away from?

im kinda diggin' the blue

 

[orange flattop freestyler]

Nothin to stay away from as such mate but twills are awkward to work with. When you cut them they can easily fall apart due to the loosness of the weave.

If you've never used carbon before this might be a little too fiddly for you, its up to you though mate, you can use it but you'll have to be very careful and take your time if you want it to look nice :biggrin:

 

[Exile]

thanx loads!!!

 

[Idok]

Nothin to stay away from as such mate but twills are awkward to work with. When you cut them they can easily fall apart due to the loosness of the weave.

If you've never used carbon before this might be a little too fiddly for you, its up to you though mate, you can use it but you'll have to be very careful and take your time if you want it to look nice :biggrin:

never messed with carbon before, but have done pleny of glasswork..........and if it falls apart, you just buy more!




oh, and what does it mean when the different materials are labeled: 1K, 2K, 3K????

 

[Exile]

How hard isit to learn to work with fibre glass??(to do a really good job!! at it)
Without resprayen again...

 

[orange flattop freestyler]

never messed with carbon before, but have done pleny of glasswork..........and if it falls apart, you just buy more!




oh, and what does it mean when the different materials are labeled: 1K, 2K, 3K????

Weight of the weave mate :wink:

 

[yamaslut]

How hard isit to learn to work with fibre glass??(to do a really good job!! at it)
Without resprayen again...

simple.... fiberglass will come apart just like carbon though... got to be careful w/ it

 

[beachedflunkey]

I just messed with some twill last night. I had planned on making it cosmetic but there was no way I was going to be able to keep the edges clean. So I ended up laying it where the edges wouldn't be seen (and it is actually still functional). The weave is easy to screw up too as you are squishing out the air bubbles and excess resin but nothing worth crying about. Be sure to sharpen your shears...

 

[Idok]

I just messed with some twill last night. I had planned on making it cosmetic but there was no way I was going to be able to keep the edges clean. So I ended up laying it where the edges wouldn't be seen (and it is actually still functional). The weave is easy to screw up too as you are squishing out the air bubbles and excess resin but nothing worth crying about. Be sure to sharpen your shears...

got pix?

 

[Marshj]

Nothin to stay away from as such mate but twills are awkward to work with. When you cut them they can easily fall apart due to the loosness of the weave.

If you've never used carbon before this might be a little too fiddly for you, its up to you though mate, you can use it but you'll have to be very careful and take your time if you want it to look nice :biggrin:

fellas...i think some of you are underestimating how much carbon twills come apart. I've done a lot of work with both carbon and glass. Glass comes apart nowhere near the same, the smoothness of the carbon makes the weave slide apart.

The key however to working with carbon, is to chalk a pattern onto it, then sew around the pattern. This will keep the edges of the carbon from fraying, and give a nice perty edge. Make sure to use an industrial strength needle.:cheer:

 

[QJS]

Orange is right that twill does tend to fall apart but in other ways it's easier to work with as it drapes and conforms alot better than plain weave.
The other thing to remember is that most weaves are only strong in 2 directions this must be taken into account and the direction altered accordingly with subsequent layers.
The 1k, 2k etc is the toe size and not the weight ,for example you can have a 200g 12K toe size sheet of Carbon. The weight is the weight of the carbon per meter squared. 200g meter sq carbon is approx .2 of a mm thick were as a 380g is approx .38 of a mm thick.
Lisa

 

[orange flattop freestyler]

Orange is right that twill does tend to fall apart but in other ways it's easier to work with as it drapes and conforms alot better than plain weave.
The other thing to remember is that most weaves are only strong in 2 directions this must be taken into account and the direction altered accordingly with subsequent layers.
The 1k, 2k etc is the toe size and not the weight ,for example you can have a 200g 12K toe size sheet of Carbon. The weight is the weight of the carbon per meter squared. 200g meter sq carbon is approx .2 of a mm thick were as a 380g is approx .38 of a mm thick.
Lisa

I stand corrected,:biggrin:

Looks prettier too :biggrin:

 

[waterfreak]

plain weave is much easier to work with but twill looks better and provide better structural characteristics

To keep the carbon from fraying, use a piece of tape at the line you want to cut and porceed to cut on the tape. This method will prevent the carbon from coming apart