The BladeForums.com 2024 Traditional Knife is available! Price is $250 ea (shipped within CONUS).
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You can go to a tube type handle with a screw on cap. Frank
There is another one that has a skeleton handle with bolts that holds small items. If it was big enough you could carve out some of the handle as well and hold larger objects.
like the h.e.s.t?
Something like this?
I used a single barrel in the enter with 4-40 flat head screws. On the ends are 1/8 dowel pins for alignment.