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This hardware is from usaknifemaker.com , under their "folder knife parts'. The barrels and screws will be longer than required and need to be trimmed down. They sell the black screws separately.
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These were done with 1/8", but sanding and rounding down down the outboard face took down to about 3/16" thick.

I like round corners, and contouring the face of my scales.

With carbon fiber, it has a nice factory clear coat and that provides that holographic effect. When you get down to the raw carbon as...