Carbon Fiber Limb Laminations

Started by Mike L., February 08, 2021, 06:47:55 PM

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Flem

Interesting! Would love to see some pictures of what you have made. Sound like you are using clear resin for visual appeal?

B-JS

Top to bottom
45/45 + UD Lamination
Italian Carbon with 90/0 on the Top
45/45 weave under clear Glass
All with very flat Paint Finish, so the Carbon does Not come to Shine that much.
But i use it for performance, Not for Looks.  :archer2:

[attachment=1,msg2951803][attachment=2,msg2951803][attachment=3,msg2951803]
Need to search for pictures of my self processed.
Did some Experiments with Kevlar/Carbon Hybrid for optics.
Cool looking, but very baaaad to Work with.

Roy from Pa


B-JS

Found a picture of the self-made Kevlar Stuff....

[attachment=1,msg2951814]

[attachment=2,msg2951814]



Flem

Awesome :thumbsup:  Your bows look great. I have always liked the look of the carbon/kevlar blends.
Never seen it on a bow before, thanks for sharing the pics. Really fun to see somebody venturing into new territory. Are you doing a wet lay-up or vacuuming?

B-JS

Hand laminated wet Layup and pressed.
So no 100% perfect Result.
For perfect Results i would use a Vacuum Setup.

Longcruise

Quote from: B-JS on February 11, 2021, 12:03:46 PM
Hand laminated wet Layup and pressed.
So no 100% perfect Result.
For perfect Results i would use a Vacuum Setup.

How are you pressing it?  What glue?  Been fiddling around with this and am not sure if I should cook in advance or in the layup.   Some early experiments are telling me that pre cooking can leave some air pockets using EA40.
"Every man is the creature of the age in which he lives;  very few are able to raise themselves above the ideas of the time"     Voltaire

B-JS

I use a laminating resin, that is Provided by the Shop, where i buy my Carbon weave.
In Germany, so you won't buy this.
Pressed between two thick plywood Boards with Rubberplates.
Clamped.
Not in the oven.
Had no Problems with Air pockets.

Stagmitis

B-Js thats how I do it but with Aluminum strips and hard rubber
. I have a bunch of Kevlar I have always wanted to tinker with. Any trouble sanding the Kevlar?
Stagmitis

B-JS

Absolutely horrifying.  :biglaugh:
Won't use it again.
Cutting was awfull.
And when sanding it, the Kevlar fibers kept Standing Out of the Sides of the limb.
Had to "shave" it with a razor at the end.

Stagmitis

Thats what I heard but had to ask  :banghead: I do have an application I want to try that doesnt requre cutting or sanding  :biglaugh:
Stagmitis

Buemaker

Interesting and bows look great. May I ask where you get your limb locking hardware?

B-JS

Ordinary Hardware.
Self cutting tread Inserts.
Stailness Steel screws and "Rosette". (The thick washers) don't know the english term.
I use two Pins to allign the limbs.

Longcruise

"Every man is the creature of the age in which he lives;  very few are able to raise themselves above the ideas of the time"     Voltaire

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