Thanks guys it was pretty easy, first i sanded the cholla to get ride of the outer layer, then i wrapped it with plastic wrap and taped it tight.Then mixed 5 min epoxy with
powdered charcoal to give it the black color and poured it in slow added blade then set it handel down in a pot of soil to hold it while it dryed. After about 20 min take tape and plastic wrap off and sand, their will be some plastic stuck in the epoxy but i will disappear after sanding. Mix 5 min epoxy and paint it all over the handle let dry that's it