Of seven favorites, 2 came with the handle just right. The other five - /19" Village Sirupati /AKbowie /M43 /18" WW2 /15" Sirupati - all were cut, rasped, and sanded to fit my hand and for the appropriate purpose it's be used for
19" Village Sirupati - fast, light fighter. Smaller than normal even for my hand so I could rapidly change grips.
AK Bowie top and lower steel straps taken down to my hand, front and back of handle slabs contoured to put the swell in the palm of my hand.
M43 - previously described somewhere
15" Sirupati. Rehandled by Pala. Emphasis on higher ring and deeper grooves.
18"WW2 - worked to hold 3 ways.
1) normal: two fingers in front of ring, two behind.
2) choked up: 3 fingers in front of ring, 1 behind.
3) power chopping. 1 finger in front of ring, other three behind. Leverage.