Embedding steel edge into an all-carbon-fiber knife

cotdt

cotdt

Joined
Oct 2, 2006
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I want to make a lightweight carbon fiber knife with a steel edge. I can use micarta as well. Rationale is that the knife will be light, it saves on expensive steel, and allows me to use relatively brittle steels like S125V.

What is the best way to make such a knife?
 
I've been mulling the same kind of knife myself. I hear that micarta and CF both tend to fray a little, and G10 is your best bet.

My hunch is that a 3-layer knife is the way to go- left side, right side, and then the middle made of a piece of G10 and a piece of steel of the same thickness.

Give it a shot and tell us all what mistakes to avoid. :D
 
Thanks for the advice. I'm trying to plan this carefully to avoid too much trial and error, though there will definitely be error :o

Using thin 1/16" steel sandwiched in G10 seems very feasible. Maybe I will try this route before the more extreme method of just embedding the steel edge.
 
cotdt said:
Thanks for the advice. I'm trying to plan this carefully to avoid too much trial and error, though there will definitely be error :o

Using thin 1/16" steel sandwiched in G10 seems very feasible. Maybe I will try this route before the more extreme method of just embedding the steel edge.
Click to expand...

Shoot, do you need 1/16"? :D
If you want your knife .010" behind the edge, all you really NEED is .010". :cool:
 
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What you speak of is very interesting. Have you considered pouring your own CF or even just fiberglass for the trials? This would allow a very thin edge, about 1/4" edge to spine with something similar to several "T" shaped tabs on the back that the resin would pour around. This would be the best way to attach it to the material, in my opinion.
 
zaph1 said:
What you speak of is very interesting. Have you considered pouring your own CF or even just fiberglass for the trials? This would allow a very thin edge, about 1/4" edge to spine with something similar to several "T" shaped tabs on the back that the resin would pour around. This would be the best way to attach it to the material, in my opinion.
Click to expand...

that's very similar to what I did, it's time consuming, huge % of scrap

use low viscosity epoxy resin, pull vacuum to eliminate bubbles, clamp in 2000lb minimum press

I can send you some wip pics
 
At the end of the day, what is the advantage of having a knife like the one above?
 
Edro20 said:
At the end of the day, what is the advantage of having a knife like the one above?
Click to expand...


average mass of these blades in a 12" chefs knife configuration... 3oz

solid steel would be about 3 times heavier or more

I make 8" oal American style tantos that are under an ounce

sample that sold last show with M2 edge:

pinkpapertigermedium.jpg


same size in steel will of course be stronger and more durable, but will weigh 4oz
 
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