I made this handle to add on to other projects. It has a (male) threaded stud on the top to screw into anything with the complementary (female) threads. I provide some helpers for many situations.
The handle has a integrated “modifier” object for texturing the grip:
import the handle .3mf
choose the option to keep as parts as one object ("yes")
right click on the “Modifier” part & choose Change Type
choose Modifier
right click on the “Modifier” part
choose Settings ⟫ Fuzzy Skin
check all three items
turn on fuzzy skin in the modifier
adjust other fuxxy skin setting if desired, I like Fuzzy skin thickness of 0.5