Here’s a pair of bullwhips that I recently made. They started with a cow leather core built on a spring steel rod for the handle foundation:
Then they have a plaited cowhide belly:
And a cowhide bolster put on top of the plaited belly:
Then the 8 plait kangaroo overlay was put on top of that:
Finally the knots were put on the bullwhips and they shipped out to their new owner!