Ordered new knives and a couple of rusty ones show up!

Woodrow F Call

Woodrow F Call

Joined
Jan 3, 2013
Messages
5,713
Rust Red Bone and Micarta that is!

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I really like them, but I noticed some chips/maybe cracks around the rivets of the micarta weaver..... I'm thinking about calling GEC..... It seems like a small issue, but I am concerned about the imperfections propagating in 20 years. Thoughts?

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Slight imperfections mean it was touched by the human hand. Micarta is epoxy resin with some type of structure like paper or cloth. I don't think a crack can propagate like in wood.
 
brownshoe said:
Slight imperfections mean it was touched by the human hand. Micarta is epoxy resin with some type of structure like paper or cloth. I don't think a crack can propagate like in wood.
Click to expand...

Actually, Micarta is based on a thermoset phenolic resin similar to that used in pool balls, PC circuit boards, and some kitchen cutting boards. It is cured under high heat and pressure - which is why Micarta is stable and tough. This knife looks like it uses a paper-based phenolic laminate.

TedP
 
phillipsted said:
Actually, Micarta is based on a thermoset phenolic resin

TedP
Click to expand...

True at one time, but no longer.
"Micarta" is a trademark now owned by Norplex. They offer "Micarta" materials based on epoxy, phenolic, and melamine resins. Any of them can be officially called "Micarta".

Norplex-Micarta Products
Sheet materials are made from a variety of thermoset resins
http://www.norplex-micarta.com/products/Technology_Brochure_3.pdf

Look at the range of products:
http://www.norplex-micarta.com/
 
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