I like the Osage jig. I’m isinvv hv an old piece of tung and groove plank of hardwood flooring I had left over. I’m measuring about an 1.25. Ack from center mark towards the nock for my thickest point on barrel. Then I slightly taper to the nock about .245” diam. towards the tip it’s more a gradual taper to about .180”. I may go less yet we shall see the plank of wood seems to keep good hold of it for me. I’m sure there must be a better way but for now this is working for me.